criyle/codenet-compile-errors huggingface dataset:
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main(){
  string str;
  cin >> str;
  
  int n = str.size();
  
  if  ( n<1 ) {
    cout << 'error' << endl;
  }
  
  if ( str.at(n-1) = "s" ) {
    cout << str << 'es' << endl;
  }
  
  else {
    cout << str << 's' << endl;
  }
}

Compiler output:
a.cc:11:13: warning: multi-character literal with 5 characters exceeds 'int' size of 4 bytes
   11 |     cout << 'error' << endl;
      |             ^~~~~~~
a.cc:15:20: warning: multi-character character constant [-Wmultichar]
   15 |     cout << str << 'es' << endl;
      |                    ^~~~
a.cc: In function 'int main()':
a.cc:14:22: error: invalid conversion from 'const char*' to '__gnu_cxx::__alloc_traits<std::allocator<char>, char>::value_type' {aka 'char'} [-fpermissive]
   14 |   if ( str.at(n-1) = "s" ) {
      |                      ^~~
      |                      |
      |                      const char*
Language: C++

#include<iostream>
#include<string>
using namespace std;

int main(void)
{
  	string name;
  	getline(cin, name);
  char *end,s;
  end=&s;
  end=name.end();
  	if('s'==*end)
    {
            name.push_back('e');
			      name.push_back('s');
    }
  	else
            name.push_back('s');
	cout<<name;
      return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:11:15: error: cannot convert 'std::__cxx11::basic_string<char>::iterator' to 'char*' in assignment
   11 |   end=name.end();
      |       ~~~~~~~~^~
      |               |
      |               std::__cxx11::basic_string<char>::iterator
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main()
{
  string s;
  cin>>s;
  int len=s.size();
  if(s[len-1]=="s")
    cout<<s+"es";
  else
    cout<<s+"s";
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:14: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
    9 |   if(s[len-1]=="s")
Language: Java

import java.lang.*; 
import java.util.*;
  
public class Geeks { 
  
    public static void main(String[] args) 
    {
      Scanner sc= new Scanner(System.in);
      String s =sc.nextLine();
      //System.out.println(s.toLowerCase());
      s=s.toLowerCase();
     //if(s.charAt(s.length()-1)=='s')
     if(s.lastIndexOf('s')==s.length()-1)
       s=s+"es";
       // System.out.println(s.lastIndexOf('s')==s.length()-1);
       // System.out.println(s.lastIndexOf('s'));
            //System.out.println(s.length()-1);
     else
       s=s+"s";
      // System.out.println(s.charAt(s.length()-1)); 
      System.out.println(s);
    }
}

Compiler output:
Main.java:4: error: class Geeks is public, should be declared in a file named Geeks.java
public class Geeks { 
       ^
1 error
Language: C++

#include<bits\stdc++.h>
using namespace std;
char s[10001];
int main()
{
	long long int b;
	scanf("%s",&s);
	b=strlen(s);
	if (s[b-1]=='s') 
printf("%s%s",s,"es");
else 
  printf("%s%s",s,'s');
	return 0;
}

Compiler output:
a.cc:1:9: fatal error: bits\stdc++.h: No such file or directory
    1 | #include<bits\stdc++.h>
      |         ^~~~~~~~~~~~~~~
compilation terminated.
Language: C

#include<bits/stdc++.h>
using namespace std;
int main()
{
    int i,n;
    char s[1000];
    while(scanf("%s",s)==1)
    {
        //printf("%s",s);
        n=strlen(s);
       // for(i=1;i<n;i++)
            //if(s[i]==' ')
        if(s[n-1]!='s')
        {
           s[n]='s';
           s[n+1]='\0';
           printf("%s\n",s);
        }
        else
        {
           s[n]='e';
           s[n+1]='s';
           s[n+2]='\0';
           printf("%s\n",s);
        }
           // printf("%c\n",s[n-1]);
    }
    return 0;
}


Compiler output:
main.c:1:9: fatal error: bits/stdc++.h: No such file or directory
    1 | #include<bits/stdc++.h>
      |         ^~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#pragma GCC optimizer ("O3")
#pragma GCC target ("sse4")
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define MAX(x,y) ((x)>(y)?(x):(y))
#define MIN(x,y) ((x)<(y)?(x):(y))
#define fastio ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0)
typedef long long int ll;
#define mp(a,b) make_pair(a,b)
#define pll pair<ll, ll>
#define vi vector<int>
#define vl vector<ll>
#define vll vector<vl>
#define pb push_back
#define w(t) int t;cin>>t;while(t--)
#define inp(a,n) vl a(n);rep(i,0,n) cin>>a[i]; 
#define rep(i,a,b)  for(ll i=a;i<b;i++)
int main(){
    fastio;
    string c;
  	cin>>c;
    if(c[c.size()-1]==s){
      cout<<c<<"es\n";
    }
    else
      cout<<c<<"s\n";
}

Compiler output:
a.cc: In function 'int main()':
a.cc:23:23: error: 's' was not declared in this scope
   23 |     if(c[c.size()-1]==s){
      |                       ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  string S;
    cin >> S; 
  char c = str.at(str.size()+1);
  
  if (c != 's'){
    cout << str + "s" << endl;
  }
  else if (c == 's'){
    cout << str + "es" << endl;
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:12: error: 'str' was not declared in this scope; did you mean 'std'?
    7 |   char c = str.at(str.size()+1);
      |            ^~~
      |            std
Language: C++

#include<bits\stdc++.h>
using namespace std;
char s[10001];
int main()
{
	int b;
	scanf("%s",&s);
	b=strlen(s);
	if (s[b-1]=='s') 
printf("%s%s",s,"es");
else 
  printf("%s%s",s,"s");
	return 0;
}

Compiler output:
a.cc:1:9: fatal error: bits\stdc++.h: No such file or directory
    1 | #include<bits\stdc++.h>
      |         ^~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#pragma GCC optimizer ("O3")
#pragma GCC target ("sse4")
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define MAX(x,y) ((x)>(y)?(x):(y))
#define MIN(x,y) ((x)<(y)?(x):(y))
#define fastio ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0)
typedef long long int ll;
#define mp(a,b) make_pair(a,b)
#define pll pair<ll, ll>
#define vi vector<int>
#define vl vector<ll>
#define vll vector<vl>
#define pb push_back
#define w(t) int t;cin>>t;while(t--)
#define inp(a,n) vl a(n);rep(i,0,n) cin>>a[i]; 
#define rep(i,a,b)  for(ll i=a;i<b;i++)
int main(){
    fastio;
    string c;
  	cin>>c;
    if(c[c.size()-1]==s){
      cout<<c<<"es\n";
    else
      cout<<c<<"s\n";
}

Compiler output:
a.cc: In function 'int main()':
a.cc:23:23: error: 's' was not declared in this scope
   23 |     if(c[c.size()-1]==s){
      |                       ^
a.cc:25:5: error: expected '}' before 'else'
   25 |     else
      |     ^~~~
a.cc:23:25: note: to match this '{'
   23 |     if(c[c.size()-1]==s){
      |                         ^
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main()
{
  string word,answer;
  cin >> word;
  
  if(word.at(word.size()-1) == 's')
  {
    answer = word + "es"
  }
  else
  {
    answer = word + 's'
  }
  cout << answer << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:25: error: expected ';' before '}' token
   11 |     answer = word + "es"
      |                         ^
      |                         ;
   12 |   }
      |   ~                      
a.cc:15:24: error: expected ';' before '}' token
   15 |     answer = word + 's'
      |                        ^
      |                        ;
   16 |   }
      |   ~
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main()
{
	string g,ax;
  	cin>>g;
  	int f=g.size();
  	if(g[f-1]=='s')
    {
      ax='es';
      g.append(ax);
    }
  	else{
      ax='s'
      g.append(ax);}
  cout<<g;
  return 0;
}

Compiler output:
a.cc:10:10: warning: multi-character character constant [-Wmultichar]
   10 |       ax='es';
      |          ^~~~
a.cc: In function 'int main()':
a.cc:10:10: warning: overflow in conversion from 'int' to 'char' changes value from '25971' to '115' [-Woverflow]
a.cc:14:13: error: expected ';' before 'g'
   14 |       ax='s'
      |             ^
      |             ;
   15 |       g.append(ax);}
      |       ~
Language: C++

#include<bits/stdc++.h>
int main (){
  string s;cin>>s;
  if(s.back()=='s')cout<<s<<"es\n";
  else cout<<s<<"s\n";
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:3:3: error: 'string' was not declared in this scope
    3 |   string s;cin>>s;
      |   ^~~~~~
a.cc:3:3: note: suggested alternatives:
In file included from /usr/include/c++/14/string:41,
                 from /usr/include/c++/14/bitset:52,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:52,
                 from a.cc:1:
/usr/include/c++/14/bits/stringfwd.h:77:33: note:   'std::string'
   77 |   typedef basic_string<char>    string;
      |                                 ^~~~~~
/usr/include/c++/14/string:76:11: note:   'std::pmr::string'
   76 |     using string    = basic_string<char>;
      |           ^~~~~~
a.cc:3:12: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    3 |   string s;cin>>s;
      |            ^~~
      |            std::cin
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:146:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:3:17: error: 's' was not declared in this scope
    3 |   string s;cin>>s;
      |                 ^
a.cc:4:20: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    4 |   if(s.back()=='s')cout<<s<<"es\n";
      |                    ^~~~
      |                    std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:5:8: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    5 |   else cout<<s<<"s\n";
      |        ^~~~
      |        std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  string str = S;
    cin >> S; 
  char c = str.at(str.size()+1);
  
  if (c != 's'){
    cout << S + "s" << endl;
  }
  else if (c == 's'){
    cout << S + "es" << endl;
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:5:16: error: 'S' was not declared in this scope
    5 |   string str = S;
      |                ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main()
{
  string s;
  cin>>s;
  if(strcmp(s.at(s.length()-1),"s")==0)
     {
       s.append("es");
     }
     else
     {
       s.append("s");
     }
     cout<<s<<"\n";
 }


Compiler output:
a.cc: In function 'int main()':
a.cc:7:17: error: invalid conversion from '__gnu_cxx::__alloc_traits<std::allocator<char>, char>::value_type' {aka 'char'} to 'const char*' [-fpermissive]
    7 |   if(strcmp(s.at(s.length()-1),"s")==0)
      |             ~~~~^~~~~~~~~~~~~~
      |                 |
      |                 __gnu_cxx::__alloc_traits<std::allocator<char>, char>::value_type {aka char}
In file included from /usr/include/c++/14/cstring:43,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:121,
                 from a.cc:1:
/usr/include/string.h:156:32: note:   initializing argument 1 of 'int strcmp(const char*, const char*)'
  156 | extern int strcmp (const char *__s1, const char *__s2)
      |                    ~~~~~~~~~~~~^~~~
Language: C++

#include <bits/stdc++.h>
 
using namespace std;
 
int main(){
  string s[3] = { "apple","bus", "box");
  
   
  for(int i=0;i<3;i++){
  int n = s[i].size();
  if(s[i][n-1] == 's'){
     s[i][n-1] = 'e';
    s[i].push_back('s');
  }
  else{
    s[i].push_back('s');
  }
  cout<<s[i]<<endl;
  }
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:39: error: expected '}' before ')' token
    6 |   string s[3] = { "apple","bus", "box");
      |                 ~                     ^
a.cc:6:39: error: expected ',' or ';' before ')' token
Language: C++

#include<bits\stdc++.h>
using namespace std;
char s[10001];
int main()
{
	int b;

	scanf("%s",&s);
	b=strlen(s);
	if (s[b-1]=='s') {
printf("%s%s",s,"es");
}
else 
  printf("%s%s",s,"s");
	return 0;
}

Compiler output:
a.cc:1:9: fatal error: bits\stdc++.h: No such file or directory
    1 | #include<bits\stdc++.h>
      |         ^~~~~~~~~~~~~~~
compilation terminated.
Language: C

#include<stdio.h>
#include <string.h>
int main()
{
  	int len;
    char s[1000];
    // 文字列の入力
    scanf("%s",s);
  	len = strlen(s);
    
    // 出力
    if('s'==s[len - 1])(printf("%ses\n",s));
    else(printf("%ss\n",s);
    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:13:27: error: expected ')' before ';' token
   13 |     else(printf("%ss\n",s);
      |         ~                 ^
      |                           )
main.c:14:14: error: expected ';' before '}' token
   14 |     return 0;
      |              ^
      |              ;
   15 | }
      | ~
Language: C++

#include<iostream>
#include<string>
using namespace std;

int main(void)
{
  	string name;
  	getline(cin, name);
  char *end=name.end();
  	if('s'==*end)
    {
            name.push_back('e');
			      name.push_back('s');
    }
  	else
            name.push_back('s');
	cout<<name;
      return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:21: error: cannot convert 'std::__cxx11::basic_string<char>::iterator' to 'char*' in initialization
    9 |   char *end=name.end();
      |             ~~~~~~~~^~
      |                     |
      |                     std::__cxx11::basic_string<char>::iterator
Language: C++

#include <iostream>
using namespace std;

int main() {
  int i;
  string S;
  
  if (S.at(i) == "s") {
    cout << S << "es" << endl;
  }
  
  else {
    cout << S << "s" << endl;
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:15: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
    8 |   if (S.at(i) == "s") {
      |       ~~~~~~~~^~~~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main()
{
  string s;
  cin>>s;
  if(strcmp(s.at(s.length()-1),'s')
     {
       s.append("es");
     }
     else
     {
       s.append("s");
     }
     cout<<s<<"\n";
 }


Compiler output:
a.cc: In function 'int main()':
a.cc:7:17: error: invalid conversion from '__gnu_cxx::__alloc_traits<std::allocator<char>, char>::value_type' {aka 'char'} to 'const char*' [-fpermissive]
    7 |   if(strcmp(s.at(s.length()-1),'s')
      |             ~~~~^~~~~~~~~~~~~~
      |                 |
      |                 __gnu_cxx::__alloc_traits<std::allocator<char>, char>::value_type {aka char}
In file included from /usr/include/c++/14/cstring:43,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:121,
                 from a.cc:1:
/usr/include/string.h:156:32: note:   initializing argument 1 of 'int strcmp(const char*, const char*)'
  156 | extern int strcmp (const char *__s1, const char *__s2)
      |                    ~~~~~~~~~~~~^~~~
a.cc:7:32: error: invalid conversion from 'char' to 'const char*' [-fpermissive]
    7 |   if(strcmp(s.at(s.length()-1),'s')
      |                                ^~~
      |                                |
      |                                char
/usr/include/string.h:156:50: note:   initializing argument 2 of 'int strcmp(const char*, const char*)'
  156 | extern int strcmp (const char *__s1, const char *__s2)
      |                                      ~~~~~~~~~~~~^~~~
a.cc:7:36: error: expected ';' before '{' token
    7 |   if(strcmp(s.at(s.length()-1),'s')
      |                                    ^
      |                                    ;
    8 |      {
      |      ~                              
a.cc:11:6: error: expected primary-expression before 'else'
   11 |      else
      |      ^~~~
a.cc:10:7: error: expected ')' before 'else'
   10 |      }
      |       ^
      |       )
   11 |      else
      |      ~~~~
a.cc:7:5: note: to match this '('
    7 |   if(strcmp(s.at(s.length()-1),'s')
      |     ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
const int in= 1e9+7;

int main()
{
	char str[1001];
	gets(str);
	int s=strlen(str);
	cout<<str;
	if(str[s-1]=='s')
	cout<<"es\n";
	else
	cout<<"s\n";
	return 0;
} 

Compiler output:
a.cc: In function 'int main()':
a.cc:8:9: error: 'gets' was not declared in this scope; did you mean 'getw'?
    8 |         gets(str);
      |         ^~~~
      |         getw
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  string S;
    cin >> S; 
  char c = stdat(stdsize()+1);
  
  if (c != 's'){
    cout << S + "s" << endl;
  }
  else if (c == 's'){
    cout << S + "es" << endl;
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:18: error: 'stdsize' was not declared in this scope; did you mean 'stdin'?
    7 |   char c = stdat(stdsize()+1);
      |                  ^~~~~~~
      |                  stdin
a.cc:7:12: error: 'stdat' was not declared in this scope; did you mean 'strcat'?
    7 |   char c = stdat(stdsize()+1);
      |            ^~~~~
      |            strcat
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
  string S; cin >> S;
  int n = 0;
  n = S.size();
  
  if(S.at(n) == "s") {
    cout << S + "es" << endl;
  }else{
    cout << S + "s" << endl;
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:14: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
    9 |   if(S.at(n) == "s") {
      |      ~~~~~~~~^~~~~~
Language: C++

#include <iostream>
#include <string>
#include <vector>

using namespace std;
int main()
{
	string in;
	cin >> in;
	if(in.back == "s"){
		cout << in << "es";
	}
	else if (in.back != "s") {
		cout << in << "s";
	}
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:20: error: invalid operands of types '<unresolved overloaded function type>' and 'const char [2]' to binary 'operator=='
   10 |         if(in.back == "s"){
      |            ~~~~~~~ ^~ ~~~
      |               |       |
      |               |       const char [2]
      |               <unresolved overloaded function type>
a.cc:13:26: error: invalid operands of types '<unresolved overloaded function type>' and 'const char [2]' to binary 'operator!='
   13 |         else if (in.back != "s") {
      |                  ~~~~~~~ ^~ ~~~
      |                     |       |
      |                     |       const char [2]
      |                     <unresolved overloaded function type>
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main;
{
  string S;
  cin>>S；
  if(a[a.size()-1]=='s')
    cout<<S<<es;
  else
    cout<<S<<s;
  return 0;
}

Compiler output:
a.cc:3:5: error: cannot declare '::main' to be a global variable
    3 | int main;
      |     ^~~~
a.cc:4:1: error: expected unqualified-id before '{' token
    4 | {
      | ^
Language: C

#include<stdio.h>
#include <string.h>
int main()
{
  	int len;
    char s[1000];
    // 文字列の入力
    scanf("%s",s);
  	len = strlen(s);
    
    // 出力
    if('s'==s[len - 1])(printf("%ses\n",s);
    else(printf("%ss\n",s);
    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:12:43: error: expected ')' before ';' token
   12 |     if('s'==s[len - 1])(printf("%ses\n",s);
      |                        ~                  ^
      |                                           )
main.c:15:1: error: expected declaration or statement at end of input
   15 | }
      | ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  string S;
    cin >> S; 
  char c = std.at(std.size()+1);
  
  if (c != 's'){
    cout << S + "s" << endl;
  }
  else if (c == 's'){
    cout << S + "es" << endl;
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:15: error: expected primary-expression before '.' token
    7 |   char c = std.at(std.size()+1);
      |               ^
a.cc:7:22: error: expected primary-expression before '.' token
    7 |   char c = std.at(std.size()+1);
      |                      ^
Language: C++

#include<iostream>
using namespace std;
int main()
{
  string a;
  cin>>a;
  int b;
  int i=0;
  for(;i<=a.size;i++)
  {
    b+=0;
  }
  if(a[i]==s)
  {
   cout<<a+"es";
  }
  else
  {
    cout<<a+"s"
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:13: error: invalid use of member function 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size_type std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size() const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>; size_type = long unsigned int]' (did you forget the '()' ?)
    9 |   for(;i<=a.size;i++)
      |           ~~^~~~
      |                 ()
a.cc:13:12: error: 's' was not declared in this scope
   13 |   if(a[i]==s)
      |            ^
a.cc:19:16: error: expected ';' before '}' token
   19 |     cout<<a+"s"
      |                ^
      |                ;
   20 | }
      | ~               
a.cc:20:2: error: expected '}' at end of input
   20 | }
      |  ^
a.cc:4:1: note: to match this '{'
    4 | {
      | ^
Language: C++

#include <bits/stdc++.h>
using namespace std;



int main() {
  string S;
  cin >> S;

  reverse(S.begin(), S.end());
  if(S.at(0)==s){
    reverse(S.begin(), S.end());
    cout << S+"es" <<endl;
    }
  even {reverse(S.begin(), S.end());
  cout<< S+"s" <<endl;}

}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:15: error: 's' was not declared in this scope
   11 |   if(S.at(0)==s){
      |               ^
a.cc:15:3: error: 'even' was not declared in this scope
   15 |   even {reverse(S.begin(), S.end());
      |   ^~~~
Language: C++

#include <bits/stdc++.h>

using namespace std;

int main() {
  vector<string> vec(1000);
  
  for (int i = 0; i < 1000; i++) {
    cin >> vec.at(i);
  }
  
  int j = 0;
  
  for (int i = 0; i < 1000; i++) {
    if (vec.at(i) = "") {
      j = i - 1;
      break;
    } else {
      
    }
  }
  
  if (vec.at(j) == s) {
    for (int i = 0; i < j; i++) {
      cout << vec.at(j);
    }
    cout << "es";
  } else {
    for (int i = 0; i < j; i++) {
      cout << vec.at(j);
    }
    cout << "s";
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:15:19: error: could not convert '(& vec.std::vector<std::__cxx11::basic_string<char> >::at(((std::vector<std::__cxx11::basic_string<char> >::size_type)i)))->std::__cxx11::basic_string<char>::operator=(((const char*)""))' from 'std::__cxx11::basic_string<char>' to 'bool'
   15 |     if (vec.at(i) = "") {
      |         ~~~~~~~~~~^~~~
      |                   |
      |                   std::__cxx11::basic_string<char>
a.cc:23:20: error: 's' was not declared in this scope
   23 |   if (vec.at(j) == s) {
      |                    ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  string S;
    cin >> S; 
  char c = std.at(str.size()+1);
  
  if (c != 's'){
    cout << S + "s" << endl;
  }
  else if (c == 's'){
    cout << S + "es" << endl;
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:15: error: expected primary-expression before '.' token
    7 |   char c = std.at(str.size()+1);
      |               ^
a.cc:7:19: error: 'str' was not declared in this scope; did you mean 'std'?
    7 |   char c = std.at(str.size()+1);
      |                   ^~~
      |                   std
Language: C++

#include<iostream>
#include<string>
using namespace std;

int main(void)
{
  	string name;
  	getline(cin, name);
  char end=name.end();
  	if('s'==end)
    {
            name.push_back('e');
			      name.push_back('s');
    }
  	else
            name.push_back('s');
	cout<<name;
      return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:20: error: cannot convert 'std::__cxx11::basic_string<char>::iterator' to 'char' in initialization
    9 |   char end=name.end();
      |            ~~~~~~~~^~
      |                    |
      |                    std::__cxx11::basic_string<char>::iterator
Language: C++

#include <iostream>
using namespace std;

int main() {
  string S;
  
  if (S.at(i) == "s") {
    cout << S << "es" << endl;
  }
  
  else {
    cout << S << "s" << endl;
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:12: error: 'i' was not declared in this scope
    7 |   if (S.at(i) == "s") {
      |            ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  string S;
    cin >> S; 
  char c = str.at(str.size()+1);
  
  if (c != 's'){
    cout << S + "s" << endl;
  }
  else if (c == 's'){
    cout << S + "es" << endl;
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:12: error: 'str' was not declared in this scope; did you mean 'std'?
    7 |   char c = str.at(str.size()+1);
      |            ^~~
      |            std
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  string s;
  cin >> s;
  int n = s.size();
  if(s[n-1]=='s'){
    s.push_back("es");
  }else{
    s.push_back("s");
  }
  cout << s;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:17: error: invalid conversion from 'const char*' to 'char' [-fpermissive]
    9 |     s.push_back("es");
      |                 ^~~~
      |                 |
      |                 const char*
In file included from /usr/include/c++/14/string:54,
                 from /usr/include/c++/14/bitset:52,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:52,
                 from a.cc:1:
/usr/include/c++/14/bits/basic_string.h:1572:24: note:   initializing argument 1 of 'void std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::push_back(_CharT) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]'
 1572 |       push_back(_CharT __c)
      |                 ~~~~~~~^~~
a.cc:11:17: error: invalid conversion from 'const char*' to 'char' [-fpermissive]
   11 |     s.push_back("s");
      |                 ^~~
      |                 |
      |                 const char*
/usr/include/c++/14/bits/basic_string.h:1572:24: note:   initializing argument 1 of 'void std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::push_back(_CharT) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]'
 1572 |       push_back(_CharT __c)
      |                 ~~~~~~~^~~
Language: C

#include<stdio.h>
int main()
{
  	int len;
    char s[1000];
    // 文字列の入力
    scanf("%s",s);
  	len = strlen(s);
    
    // 出力
    if('s'==s[len - 1])(printf("%ses\n",s);
    else(printf("%ss\n",s);
    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:8:15: error: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
    8 |         len = strlen(s);
      |               ^~~~~~
main.c:2:1: note: include '<string.h>' or provide a declaration of 'strlen'
    1 | #include<stdio.h>
  +++ |+#include <string.h>
    2 | int main()
main.c:8:15: warning: incompatible implicit declaration of built-in function 'strlen' [-Wbuiltin-declaration-mismatch]
    8 |         len = strlen(s);
      |               ^~~~~~
main.c:8:15: note: include '<string.h>' or provide a declaration of 'strlen'
main.c:11:43: error: expected ')' before ';' token
   11 |     if('s'==s[len - 1])(printf("%ses\n",s);
      |                        ~                  ^
      |                                           )
main.c:14:1: error: expected declaration or statement at end of input
   14 | }
      | ^
Language: C++

#include <bits/stdc++.h>

using namespace std;

int main() {
  vector<int> vec(1000);
  
  for (int i = 0; i < 1000; i++) {
    cin >> vec.at(i);
  }
  
  int j = 0;
  
  for (int i = 0; i < 1000; i++) {
    if (vec.at(i) = "") {
      j = i - 1;
      break;
    } else {
      
    }
  }
  
  if (vec.at(j) == s) {
    for (int i = 0; i < j; i++) {
      cout << vec.at(j);
    }
    cout << "es";
  } else {
    for (int i = 0; i < j; i++) {
      cout << vec.at(j);
    }
    cout << "s";
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:15:21: error: invalid conversion from 'const char*' to '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type' {aka 'int'} [-fpermissive]
   15 |     if (vec.at(i) = "") {
      |                     ^~
      |                     |
      |                     const char*
a.cc:23:20: error: 's' was not declared in this scope
   23 |   if (vec.at(j) == s) {
      |                    ^
Language: Java

import java.util.*;
import java.lang.*;
import java.io.*;

public class Main {
    public static void main(String[] args) {
     Scanner sc=new Scanner(System.in);
     String inp=sc.next();
     deployA obj=new deployA();
     obj.solve(inp);
 	}
      }
        
  }
    
}
class deployA
{
    public void solve(String inp)
    {
      int l=inp.length();
      StringBuffer ans=new StringBuffer(inp);
      if(inp.charAt(l-1)=='s')
      {
        ans.append("es");
      }
      else
      {
        ans.append("s");
      }
      System.out.println(ans.toString());
    }
    
}


Compiler output:
Main.java:14: error: class, interface, enum, or record expected
  }
  ^
1 error
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main()
{
  string s;
  cin>>s;
  if(strcmp(s[s.length()-1],"s")==0)
     {
       s.append("es");
     }
     else
     {
       s.append("s");
     }
     cout<<s<<"\n";
 }


Compiler output:
a.cc: In function 'int main()':
a.cc:7:12: error: invalid conversion from '__gnu_cxx::__alloc_traits<std::allocator<char>, char>::value_type' {aka 'char'} to 'const char*' [-fpermissive]
    7 |   if(strcmp(s[s.length()-1],"s")==0)
      |      ~~~~~~^~~~~~~~~~~~~~~~~~~~~
      |            |
      |            __gnu_cxx::__alloc_traits<std::allocator<char>, char>::value_type {aka char}
In file included from /usr/include/c++/14/cstring:43,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:121,
                 from a.cc:1:
/usr/include/string.h:156:32: note:   initializing argument 1 of 'int strcmp(const char*, const char*)'
  156 | extern int strcmp (const char *__s1, const char *__s2)
      |                    ~~~~~~~~~~~~^~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
  string S; cin >> S;
  int n = 0;
  n = S.size();
  
  if(S.size(n) == "s") {
    cout << S + "es" << endl;
  }else{
    cout << S + "s" << endl;
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:12: error: no matching function for call to 'std::__cxx11::basic_string<char>::size(int&)'
    9 |   if(S.size(n) == "s") {
      |      ~~~~~~^~~
In file included from /usr/include/c++/14/string:54,
                 from /usr/include/c++/14/bitset:52,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:52,
                 from a.cc:1:
/usr/include/c++/14/bits/basic_string.h:1076:7: note: candidate: 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size_type std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size() const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>; size_type = long unsigned int]'
 1076 |       size() const _GLIBCXX_NOEXCEPT
      |       ^~~~
/usr/include/c++/14/bits/basic_string.h:1076:7: note:   candidate expects 0 arguments, 1 provided
Language: Java

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String S = sc.next();

        if(S.charAt(S.length()-1) == 's'){
            System.out.println(S+"es");
        }else{
            System.out.println(S+"s");
        }

    }

}


Compiler output:
Main.java:4: error: cannot find symbol
        Scanner sc = new Scanner(System.in);
        ^
  symbol:   class Scanner
  location: class Main
Main.java:4: error: cannot find symbol
        Scanner sc = new Scanner(System.in);
                         ^
  symbol:   class Scanner
  location: class Main
2 errors
Language: Java

import java.util.Scanner;

public class Main {

  public static void main(String[] args) {

    Scanner sc = new Scanner(System.in);
    String S = sc.nextLine();

    if(charAt(S.length()-1 != s){
        String x = S.append(es);
    } eles{
        String x = S.append(s);
    }
    System.out.print(x);
}


Compiler output:
Main.java:10: error: ')' expected
    if(charAt(S.length()-1 != s){
                                ^
Main.java:12: error: not a statement
    } eles{
      ^
Main.java:12: error: ';' expected
    } eles{
          ^
Main.java:16: error: reached end of file while parsing
}
 ^
4 errors
Language: C++

#include<iostream>
#include<string>
using namespace std;

int main(void)
{
  	vector<char> name;
  	getline(cin, name);
  	if('s'==name.end())
    {
            name.push_back('e');
			      name.push_back('s');
    }
  	else
            name.push_back('s');
	cout<<name;
      return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:9: error: 'vector' was not declared in this scope
    7 |         vector<char> name;
      |         ^~~~~~
a.cc:2:1: note: 'std::vector' is defined in header '<vector>'; this is probably fixable by adding '#include <vector>'
    1 | #include<iostream>
  +++ |+#include <vector>
    2 | #include<string>
a.cc:7:16: error: expected primary-expression before 'char'
    7 |         vector<char> name;
      |                ^~~~
a.cc:8:22: error: 'name' was not declared in this scope; did you mean 'tzname'?
    8 |         getline(cin, name);
      |                      ^~~~
      |                      tzname
Language: C++

#include <bits/stdc++.h>
using namespace std;



int main() {
  string S;
  cin >> S;

  reverse(S.begin(), S.end());
  if(S.at(0)=="s"){
    reverse(S.begin(), S.end());
    cout << S+"es" <<endl;}
  reverse(S.begin(), S.end());
    cout<< S+"s" <<endl;

}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:13: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   11 |   if(S.at(0)=="s"){
      |      ~~~~~~~^~~~~
Language: C++

void C(string s)
{
  int i=0;

  int len=strlen(s);
  while(i<len)
  {
    if(s[len-1]=='s')
    {
      s[i]='e';
    }
    i++;
  }
  cout<<s;
}
  
      
    
  

Compiler output:
a.cc:1:6: error: variable or field 'C' declared void
    1 | void C(string s)
      |      ^
a.cc:1:8: error: 'string' was not declared in this scope
    1 | void C(string s)
      |        ^~~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
  string x;
  int a;
  cin >> x;
a=x.size();
  if (x.at(a-1) !== 's') {
    cout << x << "s" << endl;
  }

  if (x.at(a-1) == 's') {
    cout << x << "es" << endl;
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:19: error: expected primary-expression before '=' token
    9 |   if (x.at(a-1) !== 's') {
      |                   ^
Language: C++

#include <bits/stdc++.h>

using namespace std;

int main() {
  vector<int> vec(1000);
  
  for (int i = 0; i < 1000; i++) {
    cin >> vec.at(i);
  }
  
  int j = 0;
  
  while (int i = 0; i < 1000; i++) {
    if (vec.at(i) = "") {
      j = i - 1;
      break;
    } else {
      
    }
  }
  
  if (vec.at(j) == s) {
    for (int i = 0; i < j; i++) {
      cout << vec.at(j);
    }
    cout << "es";
  } else {
    for (int i = 0; i < j; i++) {
      cout << vec.at(j);
    }
    cout << "s";
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:14:19: error: expected ')' before ';' token
   14 |   while (int i = 0; i < 1000; i++) {
      |         ~         ^
      |                   )
a.cc:14:21: error: 'i' was not declared in this scope
   14 |   while (int i = 0; i < 1000; i++) {
      |                     ^
a.cc:23:20: error: 's' was not declared in this scope
   23 |   if (vec.at(j) == s) {
      |                    ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  string str;
    cin >> str; 
  char c = str.at(str.size()+1);
  
  if (c !== 's'){
    cout << str + "s" << endl;
  }
  else if (c == 's'){
    cout << str + "es" << endl;
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:11: error: expected primary-expression before '=' token
    9 |   if (c !== 's'){
      |           ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main()
{
  string s;
  cin>>s;
  if(strcmp(s[s.length()-1],"s")
     {
       s.append("es");
     }
     else
     {
       s.append("s");
     }
     cout<<s<<"\n";
 }


Compiler output:
a.cc: In function 'int main()':
a.cc:7:12: error: invalid conversion from '__gnu_cxx::__alloc_traits<std::allocator<char>, char>::value_type' {aka 'char'} to 'const char*' [-fpermissive]
    7 |   if(strcmp(s[s.length()-1],"s")
      |      ~~~~~~^~~~~~~~~~~~~~~~~~~~~
      |            |
      |            __gnu_cxx::__alloc_traits<std::allocator<char>, char>::value_type {aka char}
In file included from /usr/include/c++/14/cstring:43,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:121,
                 from a.cc:1:
/usr/include/string.h:156:32: note:   initializing argument 1 of 'int strcmp(const char*, const char*)'
  156 | extern int strcmp (const char *__s1, const char *__s2)
      |                    ~~~~~~~~~~~~^~~~
a.cc:7:33: error: expected ';' before '{' token
    7 |   if(strcmp(s[s.length()-1],"s")
      |                                 ^
      |                                 ;
    8 |      {
      |      ~                           
a.cc:11:6: error: expected primary-expression before 'else'
   11 |      else
      |      ^~~~
a.cc:10:7: error: expected ')' before 'else'
   10 |      }
      |       ^
      |       )
   11 |      else
      |      ~~~~
a.cc:7:5: note: to match this '('
    7 |   if(strcmp(s[s.length()-1],"s")
      |     ^
Language: C++

#include<iostream>
using namespace std;

int main()
{
  char str[100]；
  int i=0;
  cin>>str;
  char *ptr=str;
  while(ptr->next!=null)
    i++;
  i=i+1;
  if(str[i]=='s')
    cout<<str<<'es';
  else
    cout<<str<<'s';
 
}

Compiler output:
a.cc:14:16: warning: multi-character character constant [-Wmultichar]
   14 |     cout<<str<<'es';
      |                ^~~~
a.cc: In function 'int main()':
a.cc:6:16: error: expected initializer before '\U0000ff1b'
    6 |   char str[100]；
      |                ^~
a.cc:8:8: error: 'str' was not declared in this scope; did you mean 'std'?
    8 |   cin>>str;
      |        ^~~
      |        std
a.cc:10:14: error: request for member 'next' in '* ptr', which is of non-class type 'char'
   10 |   while(ptr->next!=null)
      |              ^~~~
a.cc:10:20: error: 'null' was not declared in this scope
   10 |   while(ptr->next!=null)
      |                    ^~~~
a.cc:11:5: error: 'i' was not declared in this scope
   11 |     i++;
      |     ^
a.cc:12:3: error: 'i' was not declared in this scope
   12 |   i=i+1;
      |   ^
Language: C

#include <stdio.h>
#include <string.h>
int main(void){
  char s[1000];
  scanf("%s",s);
  x=strlen(s);
  if(s[x-1]=='s'){
    s[x]='e';
    s[x+1]='s';
    s[x+2]='\0'  
  }
  else{
    s[x]='s';
    s[x+1]='\0';
  }
  printf("%s",s);
  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:6:3: error: 'x' undeclared (first use in this function)
    6 |   x=strlen(s);
      |   ^
main.c:6:3: note: each undeclared identifier is reported only once for each function it appears in
main.c:10:16: error: expected ';' before '}' token
   10 |     s[x+2]='\0'
      |                ^
      |                ;
   11 |   }
      |   ~
Language: Java

import java.util.*;
import java.lang.*;
import java.io.*;

public class A {
    public static void main(String[] args) {
     Scanner sc=new Scanner(System.in);
     String inp=sc.next();
     deployA obj=new deployA();
     obj.solve(inp);
 	}
 }
class deployA
{
    public void solve(String inp)
    {
      int l=inp.length();
      StringBuffer ans=new StringBuffer(inp);
      if(inp.charAt(l-1)=='s')
      {
        ans.append("es");
      }
      else
      {
        ans.append("s");
      }
      System.out.println(ans.toString());
    }
    
}


Compiler output:
Main.java:5: error: class A is public, should be declared in a file named A.java
public class A {
       ^
1 error
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main()
{
  string s;
  cin>>s;
  if(strcmp(s[s.length()-1],'s')
     {
       s.append("es");
     }
     else
     {
       s.append("s");
     }
     cout<<s<<"\n";
 }

Compiler output:
a.cc: In function 'int main()':
a.cc:7:12: error: invalid conversion from '__gnu_cxx::__alloc_traits<std::allocator<char>, char>::value_type' {aka 'char'} to 'const char*' [-fpermissive]
    7 |   if(strcmp(s[s.length()-1],'s')
      |      ~~~~~~^~~~~~~~~~~~~~~~~~~~~
      |            |
      |            __gnu_cxx::__alloc_traits<std::allocator<char>, char>::value_type {aka char}
In file included from /usr/include/c++/14/cstring:43,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:121,
                 from a.cc:1:
/usr/include/string.h:156:32: note:   initializing argument 1 of 'int strcmp(const char*, const char*)'
  156 | extern int strcmp (const char *__s1, const char *__s2)
      |                    ~~~~~~~~~~~~^~~~
a.cc:7:29: error: invalid conversion from 'char' to 'const char*' [-fpermissive]
    7 |   if(strcmp(s[s.length()-1],'s')
      |                             ^~~
      |                             |
      |                             char
/usr/include/string.h:156:50: note:   initializing argument 2 of 'int strcmp(const char*, const char*)'
  156 | extern int strcmp (const char *__s1, const char *__s2)
      |                                      ~~~~~~~~~~~~^~~~
a.cc:7:33: error: expected ';' before '{' token
    7 |   if(strcmp(s[s.length()-1],'s')
      |                                 ^
      |                                 ;
    8 |      {
      |      ~                           
a.cc:11:6: error: expected primary-expression before 'else'
   11 |      else
      |      ^~~~
a.cc:10:7: error: expected ')' before 'else'
   10 |      }
      |       ^
      |       )
   11 |      else
      |      ~~~~
a.cc:7:5: note: to match this '('
    7 |   if(strcmp(s[s.length()-1],'s')
      |     ^
Language: C++

#include <iostream>
using namespace std;

int main() {
  string S;
  
  if (S.at(S.size() - 1) == "s") {
    cout << S << "es" << endl;
  }
  
  else {
    cout << S << "s" << endl;
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:26: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
    7 |   if (S.at(S.size() - 1) == "s") {
      |       ~~~~~~~~~~~~~~~~~~~^~~~~~
Language: Java

public class Main{
	static public void main(String[] args){
		m1();
	}
	static public void m1(){
		java.util.Scanner scan = new java.util.Scanner(System.in);
		//int n = scan.nextInt();
		String s = scan.next();
	  	//int result;
	  	String result;
		if(s.endsWith("s")){
			result = result + "es";
		}else{
			result = result + "s";
		}
		System.out.println(result);

	}
	static public void m2(){
	  	int n = scan.nextInt();
	}
}


Compiler output:
Main.java:20: error: cannot find symbol
	  	int n = scan.nextInt();
	  	        ^
  symbol:   variable scan
  location: class Main
1 error
Language: C++

#include<iostream>
#include<string>
using namespace std;
int const maxn = 1e+3 + 10;
char a[maxn] = { '\n' };
int main()
{
	cin >> a;
	if (a[strlen(a) - 1] != 's') cout << a << 's' << endl;
	else cout << a << 'e'<<'s' << endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:15: error: 'strlen' was not declared in this scope
    9 |         if (a[strlen(a) - 1] != 's') cout << a << 's' << endl;
      |               ^~~~~~
a.cc:2:1: note: 'strlen' is defined in header '<cstring>'; this is probably fixable by adding '#include <cstring>'
    1 | #include<iostream>
  +++ |+#include <cstring>
    2 | #include<string>
Language: C++

#include<iostream>
#include<stdlib.h>
 using namespace std;
int main()
{
  char *str[];
  cin>>str;
  int n;
  n=sizeof(str);
  if(str[n-1]!='s')
    strcat(str,"s");
  else
    strcat(str,"es");
  cout<<str;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:9: error: storage size of 'str' isn't known
    6 |   char *str[];
      |         ^~~
a.cc:11:5: error: 'strcat' was not declared in this scope
   11 |     strcat(str,"s");
      |     ^~~~~~
a.cc:3:1: note: 'strcat' is defined in header '<cstring>'; this is probably fixable by adding '#include <cstring>'
    2 | #include<stdlib.h>
  +++ |+#include <cstring>
    3 |  using namespace std;
a.cc:13:5: error: 'strcat' was not declared in this scope
   13 |     strcat(str,"es");
      |     ^~~~~~
a.cc:13:5: note: 'strcat' is defined in header '<cstring>'; this is probably fixable by adding '#include <cstring>'
Language: C++

#include <iostream>

using namespace std;

int main() {
  vector<int> vec(1000);
  
  for (int i = 0; i < 1000; i++) {
    cin >> vec.at(i);
  }
  
  int j = 0;
  
  while (int i = 0; i < 1000; i++) {
    if (vec.at(i) = "") {
      j = i - 1;
      break;
    } else {
      
    }
  }
  
  if (vec.at(j) == s) {
    for (int i = 0; i < j; i++) {
      cout << vec.at(j);
    }
    cout << "es";
  } else {
    for (int i = 0; i < j; i++) {
      cout << vec.at(j);
    }
    cout << "s";
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:3: error: 'vector' was not declared in this scope
    6 |   vector<int> vec(1000);
      |   ^~~~~~
a.cc:2:1: note: 'std::vector' is defined in header '<vector>'; this is probably fixable by adding '#include <vector>'
    1 | #include <iostream>
  +++ |+#include <vector>
    2 | 
a.cc:6:10: error: expected primary-expression before 'int'
    6 |   vector<int> vec(1000);
      |          ^~~
a.cc:9:12: error: 'vec' was not declared in this scope
    9 |     cin >> vec.at(i);
      |            ^~~
a.cc:14:19: error: expected ')' before ';' token
   14 |   while (int i = 0; i < 1000; i++) {
      |         ~         ^
      |                   )
a.cc:14:21: error: 'i' was not declared in this scope
   14 |   while (int i = 0; i < 1000; i++) {
      |                     ^
a.cc:23:7: error: 'vec' was not declared in this scope
   23 |   if (vec.at(j) == s) {
      |       ^~~
a.cc:23:20: error: 's' was not declared in this scope
   23 |   if (vec.at(j) == s) {
      |                    ^
Language: C++

#include<iostream>
using namespace std;
main()
{
  int i,n,c=0;
  cin>>n;
  int d[n][2];
  for(i=0;i<n;i++)
  {
    cin>>d[i][0];
    cin>>d[i][1];
  }
  for(i=0;i<n;i++)
  {
    if((d[i][0]==d[i][1])&&(d[i+1][0]==d[i+1][1])&&(d[i+2][0]==d[i+2][1]))
    {
      c=1;
      break;
    }
  }
  if(c==1)
  cout<<"Yes";
  else
    cout"No";
}
    


Compiler output:
a.cc:3:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    3 | main()
      | ^~~~
a.cc: In function 'int main()':
a.cc:24:9: error: expected ';' before string constant
   24 |     cout"No";
      |         ^~~~
      |         ;
Language: C++

#include<iostream>
using namespace std;
 
int main() {
  string s;
  cin >> s;
  int n = s.size();
  if(s[n-1]=='s'){
    s.push_back("es");
  }else{
    s.push_back("s");
  }
  cout << s;
  return 0;


Compiler output:
a.cc: In function 'int main()':
a.cc:9:17: error: invalid conversion from 'const char*' to 'char' [-fpermissive]
    9 |     s.push_back("es");
      |                 ^~~~
      |                 |
      |                 const char*
In file included from /usr/include/c++/14/string:54,
                 from /usr/include/c++/14/bits/locale_classes.h:40,
                 from /usr/include/c++/14/bits/ios_base.h:41,
                 from /usr/include/c++/14/ios:44,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41,
                 from a.cc:1:
/usr/include/c++/14/bits/basic_string.h:1572:24: note:   initializing argument 1 of 'void std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::push_back(_CharT) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]'
 1572 |       push_back(_CharT __c)
      |                 ~~~~~~~^~~
a.cc:11:17: error: invalid conversion from 'const char*' to 'char' [-fpermissive]
   11 |     s.push_back("s");
      |                 ^~~
      |                 |
      |                 const char*
/usr/include/c++/14/bits/basic_string.h:1572:24: note:   initializing argument 1 of 'void std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::push_back(_CharT) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]'
 1572 |       push_back(_CharT __c)
      |                 ~~~~~~~^~~
a.cc:14:12: error: expected '}' at end of input
   14 |   return 0;
      |            ^
a.cc:4:12: note: to match this '{'
    4 | int main() {
      |            ^