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

#include<stdio.h>
#include<iostream>
#include<string.h>
 int main()
 { 
   std::string x;
   std::cin>>x;
   if(x[x.size()-1]=="s"){
   std::cout<<x<<"es";
   }else{
     std::cout<<x<<"s";
   }
 }

Compiler output:
a.cc: In function 'int main()':
a.cc:8:20: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
    8 |    if(x[x.size()-1]=="s"){
Language: Java

import java.io.*;
import java.util.*;
class Main
{
  public static void main(String[] args)
  {
    Scanner sc= new Scanner(System.in);
    String str = sc.next();
    int len=str.length();
    if(str.charAt(length-1)=='s')
      System.out.print(str+"es");
    else
      System.out.print(str+"s");
  }
}

Compiler output:
Main.java:10: error: cannot find symbol
    if(str.charAt(length-1)=='s')
                  ^
  symbol:   variable length
  location: class Main
1 error
Language: C

#include<stdio.h>
#include<string.h>
int main(){
  char str[1000];
  scanf("%s",str);
  int len = strlen(str);
  if(str[len-1] == "s"){
    strcat(str,"es");
  }else{
    strcat(str,"s");
  }
  return 0；
}
  

Compiler output:
main.c: In function 'main':
main.c:7:17: warning: comparison between pointer and integer
    7 |   if(str[len-1] == "s"){
      |                 ^~
main.c:12:10: error: invalid suffix "；" on integer constant
   12 |   return 0；
      |          ^~~
main.c:12:13: error: expected ';' before '}' token
   12 |   return 0；
      |             ^
      |             ;
   13 | }
      | ~
Language: C++

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


int main() {
    string s;
    cin >> s;
    int a = s.size();
    if (s[a - 1] == "s") s += "es";
    else s += "s";
    cout << s << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:18: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
    9 |     if (s[a - 1] == "s") s += "es";
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();
         String x = "";

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



Compiler output:
Main.java:11: error: cannot find symbol
        if(charAt(S.length()-1 != s)){
                                  ^
  symbol:   variable s
  location: class Main
Main.java:12: error: variable x is already defined in method main(String[])
            String x = S + "s";
                   ^
Main.java:14: error: variable x is already defined in method main(String[])
            String x = S + "es";
                   ^
3 errors
Language: C++

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

int main() {
    char ss[1003];
    cin >> ss;
    int len = strlen(ss);
    if (ss[strlen(ss) - 1] == 's') {
        ss[len] = 'e';
        ss[len + 1] = 's';
        ss[len + 2] = '\0';
    }
    else {
        ss[len] = 's';
        ss[len + 1] = '\0';
    }
    cout << ss << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:15: error: 'strlen' was not declared in this scope
    8 |     int len = strlen(ss);
      |               ^~~~~~
a.cc:3:1: note: 'strlen' is defined in header '<cstring>'; this is probably fixable by adding '#include <cstring>'
    2 | #include <cstdio>
  +++ |+#include <cstring>
    3 | using namespace std;
Language: C++

#include<stdc++.h>
using namespace std;
int main()
{
  string j;
  char c=j.back();
  if(c!='e')
  {
    j+='e';
  }
  else
  {
    j+="es";
  }
  cout<<j<<endl;
}
  

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

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

/* Defines begin */
#define fastio ios_base::sync_with_stdio(false), cin.tie(NULL) , cout.tie(NULL);
#define w1 solve();
#define pb push_back
#define mp make_pair
#define double long double
#define fi first 
#define se second
#define all(a) (a).begin(),(a).end()
#define FOR(I,A,B) for(int I = (A); I < (B); ++I)
#define FOR2(I,A,B) for(ll I = (A); I <= (B); ++I)
#define REP(I,N)   FOR(I,0,N)
#define random (rand()<<16|rand())
#define sqr(x) (x)*(x)
#define base complex<double>
#define LOCAL
#ifdef LOCAL
#define trace(...) __f(#__VA_ARGS__, __VA_ARGS__)
#else
#define trace(...) 42
#endif
/* Defines end */

/* Constants begin */
const long long int inf = 2e18 + 7;
const long long int mod = 1e9 + 7;
const double eps = 1e-7;
const double PI = 2*acos(0.0);
const double E = 2.71828;
/* Constants end */

/* Typedef begin */
typedef long long int ll;
typedef pair<ll,ll> pi;
typedef vector<ll> vi;
/* Typedef end */

template <typename Arg1>
void __f(const char* name, Arg1&& arg1)
{
	cerr << name << ": " << arg1 << endl;
}

template <typename Arg1, typename... Args>
void __f(const char* names, Arg1&& arg1, Args&&... args)
{
	const char* comma = strchr(names + 1, ',');
	cerr.write(names, comma - names) << ": " << arg1 << " |";
	__f(comma + 1, args...);
}



void solve()
{
    string s;
    cin >> s;
    ll n = s.size();
    bool flag = false;
    for(int i = 0; i < n; ++i)
    {
	    if(s[i] >= 'A' && s[i] <= 'Z')
            s[i] = s[i] - 'A' + 'a';
		    
    }
	
	
	if(s[n - 1] == 's' || s[n - 1] == 'z' ||)
		cout << s << "es" << "\n";
	else 
		cout << s << "s" << "\n";

}



 
 
auto main() -> int
{
	fastio
	w1
	return 0;
}


Compiler output:
a.cc: In function 'void solve()':
a.cc:71:49: error: expected primary-expression before ')' token
   71 |         if(s[n - 1] == 's' || s[n - 1] == 'z' ||)
      |                                                 ^
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();
         String x = "";

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



Compiler output:
Main.java:11: error: cannot find symbol
        if(charAt(S.length()-1 != s)){
                                  ^
  symbol:   variable s
  location: class Main
Main.java:12: error: variable x is already defined in method main(String[])
            String x = S + "s";
                   ^
Main.java:14: error: variable x is already defined in method main(String[])
            String x = S + "es";
                   ^
3 errors
Language: C++

#include<iostream>
using namespace std;

int main()
{
  char a[100];
  int i;
  for(i=0;;i++)
  {
    cin>>a[i];
    if(a[i]=='\n')
      break;
  }
for(j=0;j<i;j++)
{
  cout<<a[j];
}
  if(a[i]=='s')
  {
    cout<<'e'<<'s';
  }
  else
    cout<<'s';
  
  
  
}


Compiler output:
a.cc: In function 'int main()':
a.cc:14:5: error: 'j' was not declared in this scope
   14 | for(j=0;j<i;j++)
      |     ^
Language: C++

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

Compiler output:
a.cc: In function 'int main()':
a.cc:10:5: error: 's' was not declared in this scope
   10 |     s+='s';
      |     ^
a.cc:11:5: error: expected '}' before 'else'
   11 |     else
      |     ^~~~
a.cc:9:3: note: to match this '{'
    9 |   {
      |   ^
a.cc:13:7: error: 's' was not declared in this scope
   13 |       s+="es";
      |       ^
a.cc:15:12: error: 's' was not declared in this scope
   15 |      cout<<s<<endl;
      |            ^
a.cc: At global scope:
a.cc:17:1: error: expected declaration before '}' token
   17 | }
      | ^
Language: C++

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



int main() {
  string S;
  cin >> S;
  char k = 's';
  reverse(S.begin(), S.end());
  if(S.at(0)==k){
    reverse(S.begin(), S.end());
    S.push_back('es')
    cout << S <<endl;
    }
  reverse(S.begin(), S.end());
  S.push_back('s')
  cout<< S <<endl;

}

Compiler output:
a.cc:13:17: warning: multi-character character constant [-Wmultichar]
   13 |     S.push_back('es')
      |                 ^~~~
a.cc: In function 'int main()':
a.cc:13:17: warning: overflow in conversion from 'int' to 'char' changes value from '25971' to '115' [-Woverflow]
a.cc:13:22: error: expected ';' before 'cout'
   13 |     S.push_back('es')
      |                      ^
      |                      ;
   14 |     cout << S <<endl;
      |     ~~~~              
a.cc:17:19: error: expected ';' before 'cout'
   17 |   S.push_back('s')
      |                   ^
      |                   ;
   18 |   cout<< S <<endl;
      |   ~~~~
Language: C++

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

int main(void)
{
  	char name[1002];
  	cin.getline(name, 1000);
  	int i=0;
	while(name[i]!='\0')
    {
      i++;
    }
  	if('s'==name[i-1])
    {
        name[i]='e';
      	name[i+1]='s';
      	name[i+2]=null;
    }
  	else
    {
      name[i]='s';
      name[i+1]=null;
    }

  cout<<name;
      return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:18:19: error: 'null' was not declared in this scope
   18 |         name[i+2]=null;
      |                   ^~~~
a.cc:23:17: error: 'null' was not declared in this scope
   23 |       name[i+1]=null;
      |                 ^~~~
Language: C

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

Compiler output:
main.c: In function 'main':
main.c:15:19: error: expected ';' at end of input
   15 |     printf("%s",s)
      |                   ^
      |                   ;
main.c:15:5: error: expected declaration or statement at end of input
   15 |     printf("%s",s)
      |     ^~~~~~
Language: C++

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


int main() {
    string S;
    cin >> S;
    String cmp = 's';
    int end = S.size() - 1;
     if (S[end]== cmp){
         S += 'es';
     }else{
         S += 's';
     }
     cout << S << endl;
    return 0;
}

Compiler output:
a.cc:11:15: warning: multi-character character constant [-Wmultichar]
   11 |          S += 'es';
      |               ^~~~
a.cc: In function 'int main()':
a.cc:8:5: error: 'String' was not declared in this scope
    8 |     String cmp = 's';
      |     ^~~~~~
a.cc:10:19: error: 'cmp' was not declared in this scope; did you mean 'bcmp'?
   10 |      if (S[end]== cmp){
      |                   ^~~
      |                   bcmp
a.cc:11:15: warning: overflow in conversion from 'int' to 'char' changes value from '25971' to '115' [-Woverflow]
   11 |          S += 'es';
      |               ^~~~
Language: C++

#include<studio.h>
#include<string.h>
int main()
{
  char noun[1001];if(!scanf("%s",noun)){return -1;}
  return printf("%s%s\n",noun,noun[strlen(noun)-1]=='s'?"es":"s"),0;
}

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

#include <iostream>
using namespace std;
int main() {
    string str;
    cin >> str;
    
    int a = str.size();
    char b = str.at(a - 1);
    
    char c = 's';
    if(b == c) {
        cout << str << "es" << endl;
    }
     else if() {
        cout << str << "s" << endl;
    }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:14:14: error: expected primary-expression before ')' token
   14 |      else if() {
      |              ^
Language: C++

#include <iostream>
using namespace std;
int main(){
    string str;
    cin >> str;
    
    int a = str.size();
    char b = str.at(a - 1);
    
    char c = 's';
    if(b == c){
        cout << str << "es" << endl;
    }
     else if(){
        cout << str << "s" << endl;
    }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:14:14: error: expected primary-expression before ')' token
   14 |      else if(){
      |              ^
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();
         String x = "";

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





Compiler output:
Main.java:11: error: cannot find symbol
        if(charAt(S.length()-1 != s)){
                                  ^
  symbol:   variable s
  location: class Main
Main.java:12: error: variable x is already defined in method main(String[])
            String x = S.append(s);
                   ^
Main.java:12: error: cannot find symbol
            String x = S.append(s);
                                ^
  symbol:   variable s
  location: class Main
Main.java:14: error: variable x is already defined in method main(String[])
            String x = S.append(es);
                   ^
Main.java:14: error: cannot find symbol
            String x = S.append(es);
                                ^
  symbol:   variable es
  location: class Main
5 errors
Language: Java

import java.io.BufferedReader; 
import java.io.IOException; 
import java.io.InputStreamReader; 
public class Test  
{ 
    public static void main(String[] args) throws IOException  
    { 
        //Enter data using BufferReader 
        BufferedReader reader =  
                   new BufferedReader(new InputStreamReader(System.in)); 
         
        // Reading data using readLine 
        String s =reader.readLine();
      //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 Test is public, should be declared in a file named Test.java
public class Test  
       ^
1 error
Language: Java

import java.util.*;

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

        String S = sc.nextLine();
        String endS = S.substring(S.length() - 1);


        System.out.println(endS);

        if (endS.equals("s")){
            S += "es";
            System.out.println(S);
        }else{
            S += "s";
            System.out.println(S);
        }
        sc.close();
    }
}

Compiler output:
Main.java:3: 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;
  int n= s.size();
  char x;
  for (int i=0; i<=n; i++) {
  if (s[n-1] = 's') x = 'es';
  else x='s';
  }
  cout << s + x << enld;
  return 0;
}


Compiler output:
a.cc:10:25: warning: multi-character character constant [-Wmultichar]
   10 |   if (s[n-1] = 's') x = 'es';
      |                         ^~~~
a.cc: In function 'int main()':
a.cc:10:25: warning: overflow in conversion from 'int' to 'char' changes value from '25971' to '115' [-Woverflow]
a.cc:13:20: error: 'enld' was not declared in this scope
   13 |   cout << s + x << enld;
      |                    ^~~~
Language: C

#include <stdio.h>

int f;

int main(void){

  char string[999];
  
  f=scanf("%s",string);
  
  if(s[f-1]!='s')
  	printf("%ss",string);
  else
    printf("%ses",string);
  
  return 0;
}


Compiler output:
main.c: In function 'main':
main.c:11:6: error: 's' undeclared (first use in this function)
   11 |   if(s[f-1]!='s')
      |      ^
main.c:11:6: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include<stdio.h>
 int main(void)
 {
int S;
char a[S];
   scanf("%s",&a[S]);
   if(a[S]==e){
     printf("%s",a[S]);
   printf("s")}
   else{
     printf("%s",a[S]);
     printf("es");
   }
   return 0;
     
   

Compiler output:
main.c: In function 'main':
main.c:7:13: error: 'e' undeclared (first use in this function)
    7 |    if(a[S]==e){
      |             ^
main.c:7:13: note: each undeclared identifier is reported only once for each function it appears in
main.c:9:15: error: expected ';' before '}' token
    9 |    printf("s")}
      |               ^
      |               ;
main.c:14:4: error: expected declaration or statement at end of input
   14 |    return 0;
      |    ^~~~~~
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();
    String x = "";

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





Compiler output:
Main.java:13: error: not a statement
    }eles{
     ^
Main.java:13: error: ';' expected
    }eles{
         ^
Main.java:17: error: reached end of file while parsing
}
 ^
3 errors
Language: C++

#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:21:21: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   21 |     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:7:16: 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() {
  char vec[1000];
  
  cin >> vec;
  
  int j = 0;
  
  for (int i = 0; i < 1000; i++) {
    if (vec[i] == '') {
      j = i - 1;
      break;
    } else {
      
    }
  }
  
  if (vec[j] == 's') {
    for (int i = 0; i < j; i++) {
      cout << vec[i];
    }
    cout << "es";
  } else {
    for (int i = 0; i < j; i++) {
      cout << vec[i];
    }
    cout << "s";
  }
}


Compiler output:
a.cc:13:19: error: empty character constant
   13 |     if (vec[i] == '') {
      |                   ^~
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main()
{
  string str,str1="s",str2="es";
  //for(int i=0;i<str.length();i++;)
  //{
    //cin>>str[i];
  //}
  getline(cin,str);
  if(*(str.rbegin())=="s")
  {
    cout<<(str+str2)<<endl;
  }
  else
  {
    cout<<(str+str1)<<endl;
  }
  return 0;
}
  
  


Compiler output:
a.cc: In function 'int main()':
a.cc:11:21: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   11 |   if(*(str.rbegin())=="s")
      |      ~~~~~~~~~~~~~~~^~~~~
Language: C++

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



int main() {
  string S;
  vector<string> S;
  　vector<int> S(N);
　　for (int i = 0; i < N; i++) {
  　cin >> S.at(i);
  char 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:9:3: error: extended character 　 is not valid in an identifier
    9 |   　vector<int> S(N);
      |   ^
a.cc:10:1: error: extended character 　 is not valid in an identifier
   10 | 　　for (int i = 0; i < N; i++) {
      | ^
a.cc:10:1: error: extended character 　 is not valid in an identifier
a.cc:11:3: error: extended character 　 is not valid in an identifier
   11 |   　cin >> S.at(i);
      |   ^
a.cc: In function 'int main()':
a.cc:8:18: error: conflicting declaration 'std::vector<std::__cxx11::basic_string<char> > S'
    8 |   vector<string> S;
      |                  ^
a.cc:7:10: note: previous declaration as 'std::string S'
    7 |   string S;
      |          ^
a.cc:9:3: error: '\U00003000vector' was not declared in this scope
    9 |   　vector<int> S(N);
      |   ^~~~~~~~
a.cc:9:12: error: expected primary-expression before 'int'
    9 |   　vector<int> S(N);
      |            ^~~
a.cc:10:10: error: expected primary-expression before 'int'
   10 | 　　for (int i = 0; i < N; i++) {
      |          ^~~
a.cc:10:21: error: 'i' was not declared in this scope
   10 | 　　for (int i = 0; i < N; i++) {
      |                     ^
a.cc:10:25: error: 'N' was not declared in this scope
   10 | 　　for (int i = 0; i < N; i++) {
      |                         ^
a.cc:22:2: error: expected '}' at end of input
   22 | }
      |  ^
a.cc:6:12: note: to match this '{'
    6 | int main() {
      |            ^
Language: C++

#include <bits/stdc++.h>

using namespace std;

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


Compiler output:
a.cc: In function 'int main()':
a.cc:13:16: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   13 |     if (vec[i] == "") {
      |         ~~~~~~~^~~~~
a.cc:21:14: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   21 |   if (vec[j] == "s") {
      |       ~~~~~~~^~~~~~
Language: C

#include<stdio.h>
#include <string.h>

int main(void){
int i;
  char S[1002];
  char s[] = s;
  char es[] = es;
scanf("%s",S);
 i = strlen(S);
if(S[i-1]==115){
  printf("%s%s/n",S,es);
    return 0;
}
  else{
  printf("%s%s/n",S,s);
    return 0;
  }



}


Compiler output:
main.c: In function 'main':
main.c:7:14: error: invalid initializer
    7 |   char s[] = s;
      |              ^
main.c:8:15: error: invalid initializer
    8 |   char es[] = es;
      |               ^~
Language: C++

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



int main() {
  string S;
  cin >> S;
  vector<string> S;
  　vector<int> S(N);
　　for (int i = 0; i < N; i++) {
  　cin >> vec.at(i);
  char 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:10:3: error: extended character 　 is not valid in an identifier
   10 |   　vector<int> S(N);
      |   ^
a.cc:11:1: error: extended character 　 is not valid in an identifier
   11 | 　　for (int i = 0; i < N; i++) {
      | ^
a.cc:11:1: error: extended character 　 is not valid in an identifier
a.cc:12:3: error: extended character 　 is not valid in an identifier
   12 |   　cin >> vec.at(i);
      |   ^
a.cc: In function 'int main()':
a.cc:9:18: error: conflicting declaration 'std::vector<std::__cxx11::basic_string<char> > S'
    9 |   vector<string> S;
      |                  ^
a.cc:7:10: note: previous declaration as 'std::string S'
    7 |   string S;
      |          ^
a.cc:10:3: error: '\U00003000vector' was not declared in this scope
   10 |   　vector<int> S(N);
      |   ^~~~~~~~
a.cc:10:12: error: expected primary-expression before 'int'
   10 |   　vector<int> S(N);
      |            ^~~
a.cc:11:10: error: expected primary-expression before 'int'
   11 | 　　for (int i = 0; i < N; i++) {
      |          ^~~
a.cc:11:21: error: 'i' was not declared in this scope
   11 | 　　for (int i = 0; i < N; i++) {
      |                     ^
a.cc:11:25: error: 'N' was not declared in this scope
   11 | 　　for (int i = 0; i < N; i++) {
      |                         ^
a.cc:23:2: error: expected '}' at end of input
   23 | }
      |  ^
a.cc:6:12: note: to match this '{'
    6 | int main() {
      |            ^
Language: C++

#include<iostream>
using namespace std;

int main()
{
  char a[100];
  for(int i=0;;i++)
  {
    cin>>a[i];
    if(a[i]='\n')
      break;
  }
  if(a[i]=='s')
    cout<<a[i]<<"es";
  else
    cout<<a[i]<<'s';
  
}

Compiler output:
a.cc: In function 'int main()':
a.cc:13:8: error: 'i' was not declared in this scope
   13 |   if(a[i]=='s')
      |        ^
Language: C

#include<stdio.h>
#include <string.h>

int main(void){
int i;
  char S[1002];
  char s[] = s;
  char es[] = es;
scanf("%s",S);
 i = strlen(str);
if(S[i-1]==115){
  printf("%s%s/n",S,es);
    return 0;
}
  else{
  printf("%s%s/n",S,s);
    return 0;
  }



}

Compiler output:
main.c: In function 'main':
main.c:7:14: error: invalid initializer
    7 |   char s[] = s;
      |              ^
main.c:8:15: error: invalid initializer
    8 |   char es[] = es;
      |               ^~
main.c:10:13: error: 'str' undeclared (first use in this function)
   10 |  i = strlen(str);
      |             ^~~
main.c:10:13: note: each undeclared identifier is reported only once for each function it appears in
Language: Java

import java.util.Scanner;
public class _179A {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String S = sc.next();
		if(S.substring(S.length()-1)=="e") {
			System.out.println(S+"s");
		}else if(S.substring(S.length()-1)=="s") {
			System.out.println(S+"es");
		}else {
			System.out.println(S+"s");
		}
		sc.close();

	}

}


Compiler output:
Main.java:2: error: class _179A is public, should be declared in a file named _179A.java
public class _179A {
       ^
1 error
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  string str;
    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:6:12: error: 'S' was not declared in this scope
    6 |     cin >> S;
      |            ^
Language: C++

#include<bits/stdc++.h>

int main()
{
char *ch;
	cin >> ch;
	int n = sizeof(ch);
	if (ch[n - 2] == 's')
	{
		ch[n - 1] = 'e';
		ch[n ] = 's';
		ch[n + 1] = '\0';

	}
	else
	{
		ch[n - 1] = 's';
		ch[n] = '\0';
	}

	cout << ch;
return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:9: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    6 |         cin >> ch;
      |         ^~~
      |         std::cin
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:146,
                 from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:21:9: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   21 |         cout << ch;
      |         ^~~~
      |         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() {
  char vec[1000];
  
  cin >> vec;
  
  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:13:13: error: request for member 'at' in 'vec', which is of non-class type 'char [1000]'
   13 |     if (vec.at(i) == "") {
      |             ^~
a.cc:21:11: error: request for member 'at' in 'vec', which is of non-class type 'char [1000]'
   21 |   if (vec.at(j) == "s") {
      |           ^~
a.cc:23:19: error: request for member 'at' in 'vec', which is of non-class type 'char [1000]'
   23 |       cout << vec.at(j);
      |                   ^~
a.cc:28:19: error: request for member 'at' in 'vec', which is of non-class type 'char [1000]'
   28 |       cout << vec.at(j);
      |                   ^~
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 << str + "s" << endl;
  }
  else if (c == 's'){
    cout << str + "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>
#define taskname ""
#define int long long
using namespace std;

main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);   cout.tie(nullptr);
    if (ifstream("test.inp"))
    {
        freopen("test.inp", "r", stdin);
        #ifdef CHECKING
            freopen(taskname".out", "w", stdout);
        #else
            freopen("test.out", "w", stdout);
        #endif //CHECKING
    }
    else if (ifstream(taskname".inp"))
    {
        freopen(taskname".inp", "r", stdin);
        freopen(taskname".out", "w", stdout);
    }

    string s;   getline(cin, s);
    s += (s[s.size() - 1] == 's')? "es" : "s";
    cout << S;
}


Compiler output:
a.cc:6:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    6 | main()
      | ^~~~
a.cc: In function 'int main()':
a.cc:27:13: error: 'S' was not declared in this scope
   27 |     cout << S;
      |             ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main()
{
  string str,str1="s",str2="es";
  for(int i=0;i<str.size();i++;)
  {
    cin>>str[i];
  }
  if(str.back()=="s")
  {
    cout<<(str+str2)<<endl;
  }
  else
  {
    cout<<(str+str1)<<endl;
  }
  return 0;
}
  
  


Compiler output:
a.cc: In function 'int main()':
a.cc:6:31: error: expected ')' before ';' token
    6 |   for(int i=0;i<str.size();i++;)
      |      ~                        ^
      |                               )
a.cc:6:32: error: expected primary-expression before ')' token
    6 |   for(int i=0;i<str.size();i++;)
      |                                ^
a.cc:10:16: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   10 |   if(str.back()=="s")
      |      ~~~~~~~~~~^~~~~
Language: C++

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

Compiler output:
a.cc: In function 'int main()':
a.cc:10:9: error: expected ';' before 'word'
   10 |     cout word << "s";
      |         ^~~~~
      |         ;
Language: C

#include <stdio.h>
 
int main(void){

  int f;
  char string[999];
  
  f=scanf("%s",string);
  
  if(s[f-1]!='s')
  	printf("%ss",string);
  else
    printf("%ses",string);
  
  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:10:6: error: 's' undeclared (first use in this function)
   10 |   if(s[f-1]!='s')
      |      ^
main.c:10:6: note: each undeclared identifier is reported only once for each function it appears in
Language: C++

#include<iostream>
using namespace std;
int main()
{
  int n;
  cin >>n;
  int a[n];
  int b[n];
  for(int i=0;i<n;i++)
  {
    	
    	cin >>a[i]>>b[i];
  }
  int f=0;
  for(int i=0;i<n;i++)
  {
    	int c;
    	if(a[i]==b[i])
        {
          c=1;
          if(i+3<n)
          for(int j=i+1;j<i+3;j++)
          {
            if(a[i]==b[i])
            {
              c++;
            }
            else
            {
              break;
            }
            
          }
          if(c==3)
          {
            f=1;
            break;
            
          }
        }
    if(f==1)
      cout <<"Yes"<<endl;
    else
      cout <<"No"<<endl;
          
    return 0; 
}

Compiler output:
a.cc: In function 'int main()':
a.cc:47:2: error: expected '}' at end of input
   47 | }
      |  ^
a.cc:4:1: note: to match this '{'
    4 | {
      | ^
Language: C++

#include<bits/stdc++.h>
void main()
{
char *ch;
	cin >> ch;
	int n = sizeof(ch);
	if (ch[n - 2] == 's')
	{
		ch[n - 1] = 'e';
		ch[n ] = 's';
		ch[n + 1] = '\0';

	}
	else
	{
		ch[n - 1] = 's';
		ch[n] = '\0';
	}

	cout << ch;
}

Compiler output:
a.cc:2:1: error: '::main' must return 'int'
    2 | void main()
      | ^~~~
a.cc: In function 'int main()':
a.cc:5:9: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    5 |         cin >> ch;
      |         ^~~
      |         std::cin
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:146,
                 from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:20:9: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   20 |         cout << ch;
      |         ^~~~
      |         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,str1="s",str2="es";
  for(int i=0;i<str.length();i++)
  {
    cin>>str[i];
  }
  if(str.back()=="s")
  {
    cout<<(str+str2)<<endl;
  }
  else
  {
    cout<<(str+str1)<<endl;
  }
  return 0;
}
  
  


Compiler output:
a.cc: In function 'int main()':
a.cc:10:16: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   10 |   if(str.back()=="s")
      |      ~~~~~~~~~~^~~~~
Language: C++

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

int main(){
    int i;
    char matubi;
    char[1000] takahashi;
    scanf_s("%s",takahashi,1000);

    matubi = char[sizeof(takahashi) - 1];
    if(matubi == s){
        cout << "takahashi + es";
    } else {
        cout << "takahashi + s";
    }

    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:10: error: expected identifier before numeric constant
   10 |     char[1000] takahashi;
      |          ^~~~
a.cc:10:10: error: expected ']' before numeric constant
   10 |     char[1000] takahashi;
      |          ^~~~
      |          ]
a.cc:10:9: error: structured binding declaration cannot have type 'char'
   10 |     char[1000] takahashi;
      |         ^
a.cc:10:9: note: type must be cv-qualified 'auto' or reference to cv-qualified 'auto'
a.cc:10:9: error: empty structured binding declaration
a.cc:10:16: error: expected initializer before 'takahashi'
   10 |     char[1000] takahashi;
      |                ^~~~~~~~~
a.cc:11:18: error: 'takahashi' was not declared in this scope
   11 |     scanf_s("%s",takahashi,1000);
      |                  ^~~~~~~~~
a.cc:11:5: error: 'scanf_s' was not declared in this scope; did you mean 'scanf'?
   11 |     scanf_s("%s",takahashi,1000);
      |     ^~~~~~~
      |     scanf
a.cc:13:14: error: expected primary-expression before 'char'
   13 |     matubi = char[sizeof(takahashi) - 1];
      |              ^~~~
a.cc:14:18: error: 's' was not declared in this scope
   14 |     if(matubi == s){
      |                  ^
Language: C++

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



int main() {
  string S;
  cin >> S;
  vector<string> S;
  char 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:9:18: error: conflicting declaration 'std::vector<std::__cxx11::basic_string<char> > S'
    9 |   vector<string> S;
      |                  ^
a.cc:7:10: note: previous declaration as 'std::string S'
    7 |   string S;
      |          ^
Language: Java

import java.util.Scanner;

public class Test
{

	public static void Test(String[] args)
	{
		Scanner scan = new Scanner(System.in);
		String str = scan.nextLine();

		if(str.endsWith("s"))
		{
			System.out.println(str + "es");
		}
		
		else 
		{
			System.out.println(str + "s");			
		}
		
		scan.close();

	}

}


Compiler output:
Main.java:3: error: class Test is public, should be declared in a file named Test.java
public class Test
       ^
1 error
Language: C++

#include<bits\stdc++.h>
using namespace std;
char s[1001];
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(){
	string input;
  	cin>>input;
   auto s=input.end()-1;
   if(s='s')input+="es";
  else input+='s';
  cout<< input<<'\n';
}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:9: error: no match for 'operator=' (operand types are '__gnu_cxx::__normal_iterator<char*, std::__cxx11::basic_string<char> >' and 'char')
    7 |    if(s='s')input+="es";
      |         ^~~
In file included from /usr/include/c++/14/bits/stl_algobase.h:67,
                 from /usr/include/c++/14/algorithm:60,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_iterator.h:1038:11: note: candidate: 'constexpr __gnu_cxx::__normal_iterator<char*, std::__cxx11::basic_string<char> >& __gnu_cxx::__normal_iterator<char*, std::__cxx11::basic_string<char> >::operator=(const __gnu_cxx::__normal_iterator<char*, std::__cxx11::basic_string<char> >&)'
 1038 |     class __normal_iterator
      |           ^~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:1038:11: note:   no known conversion for argument 1 from 'char' to 'const __gnu_cxx::__normal_iterator<char*, std::__cxx11::basic_string<char> >&'
/usr/include/c++/14/bits/stl_iterator.h:1038:11: note: candidate: 'constexpr __gnu_cxx::__normal_iterator<char*, std::__cxx11::basic_string<char> >& __gnu_cxx::__normal_iterator<char*, std::__cxx11::basic_string<char> >::operator=(__gnu_cxx::__normal_iterator<char*, std::__cxx11::basic_string<char> >&&)'
/usr/include/c++/14/bits/stl_iterator.h:1038:11: note:   no known conversion for argument 1 from 'char' to '__gnu_cxx::__normal_iterator<char*, std::__cxx11::basic_string<char> >&&'
Language: C++

#include<iostream>
using namespace std;
int main()
{
  	// 入力
    string word;
    cin >> word;
  
  　// 
  	if ('s' == word[word.size() - 1]) {
      word += "e";
    }
 
    // 出力
    cout word << "s";
    return 0;
}

Compiler output:
a.cc:9:3: error: extended character 　 is not valid in an identifier
    9 |   　//
      |   ^
a.cc: In function 'int main()':
a.cc:9:3: error: '\U00003000' was not declared in this scope
    9 |   　//
      |   ^~
a.cc:15:9: error: expected ';' before 'word'
   15 |     cout word << "s";
      |         ^~~~~
      |         ;
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  string S;
    cin >> S; 
   l = S.size() + 1
      char c = S.at(l);
  
  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:7:4: error: 'l' was not declared in this scope
    7 |    l = S.size() + 1
      |    ^
a.cc:10:7: error: 'c' was not declared in this scope
   10 |   if (c != 's'){
      |       ^
Language: Java

import java.util.Scanner;

public class Test
{

	public static void main(String[] args)
	{
		Scanner scan = new Scanner(System.in);
		String str = scan.nextLine();

		if(str.endsWith("s"))
		{
			System.out.println(str + "es");
		}
		
		else 
		{
			System.out.println(str + "s");			
		}
		
		scan.close();

	}

}


Compiler output:
Main.java:3: error: class Test is public, should be declared in a file named Test.java
public class Test
       ^
1 error
Language: C++

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

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    string s;
    cin>>s;
   if(s[s.size()-1] != 's'){
     s += "es";
     cout<<s;
   }
  else{
    s += "s"
      cout<<s;
  }
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:15:13: error: expected ';' before 'cout'
   15 |     s += "s"
      |             ^
      |             ;
   16 |       cout<<s;
      |       ~~~~
Language: C++

#include<iostream>
using namespace std;
int main()
{
  	// 入力
    string word;
    cin >> word;
  
  　// 
  	if ('s' == word[word.size() - 1]) {
      word += "e"
    }

    // 出力
    cout word << "s"
    return 0;
}

Compiler output:
a.cc:9:3: error: extended character 　 is not valid in an identifier
    9 |   　//
      |   ^
a.cc: In function 'int main()':
a.cc:9:3: error: '\U00003000' was not declared in this scope
    9 |   　//
      |   ^~
a.cc:15:9: error: expected ';' before 'word'
   15 |     cout word << "s"
      |         ^~~~~
      |         ;
Language: C

#include <stdio.h>
#include <string.h>
int main(void){
  int x;
  char s[];
  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:5:8: error: array size missing in 's'
    5 |   char s[];
      |        ^
Language: C++

#include<bits/stdio.h>
using namespace std;
int main(){
	string input;
  	cin>>input;
   auto s=input.end()-1;
   if(s='s')input+="es";
  else input+='s';
  cout<< input<<'\n';
}

Compiler output:
In file included from a.cc:1:
/usr/include/x86_64-linux-gnu/bits/stdio.h:23:3: error: #error "Never include <bits/stdio.h> directly; use <stdio.h> instead."
   23 | # error "Never include <bits/stdio.h> directly; use <stdio.h> instead."
      |   ^~~~~
a.cc: In function 'int main()':
a.cc:4:9: error: 'string' was not declared in this scope
    4 |         string input;
      |         ^~~~~~
a.cc:2:1: note: 'std::string' is defined in header '<string>'; this is probably fixable by adding '#include <string>'
    1 | #include<bits/stdio.h>
  +++ |+#include <string>
    2 | using namespace std;
a.cc:5:9: error: 'cin' was not declared in this scope
    5 |         cin>>input;
      |         ^~~
a.cc:2:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
    1 | #include<bits/stdio.h>
  +++ |+#include <iostream>
    2 | using namespace std;
a.cc:5:14: error: 'input' was not declared in this scope; did you mean 'int'?
    5 |         cin>>input;
      |              ^~~~~
      |              int
a.cc:9:3: error: 'cout' was not declared in this scope
    9 |   cout<< input<<'\n';
      |   ^~~~
a.cc:9:3: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main()
{
  string str,str1="s",str2="es";
  for(int i=0;i<str.length();i++;)
  {
    cin>>str[i];
  }
  if(str.back()=="s")
  {
    cout<<(str+str2)<<endl;
  }
  else
  {
    cout<<(str+str1)<<endl;
  }
  return 0;
}
  
  
      
  

Compiler output:
a.cc: In function 'int main()':
a.cc:6:33: error: expected ')' before ';' token
    6 |   for(int i=0;i<str.length();i++;)
      |      ~                          ^
      |                                 )
a.cc:6:34: error: expected primary-expression before ')' token
    6 |   for(int i=0;i<str.length();i++;)
      |                                  ^
a.cc:10:16: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   10 |   if(str.back()=="s")
      |      ~~~~~~~~~~^~~~~
Language: C++

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

int main(){
    int i;
    char matubi;
    char[1000] takahashi = new char[1000];
    scanf_s("%s",takahashi,1000);

    matubi = char[sizeof(takahashi) - 1];
    if(matubi == s){
        cout << "takahashi + es";
    } else {
        cout << "takahashi + s";
    }

    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:10: error: expected identifier before numeric constant
   10 |     char[1000] takahashi = new char[1000];
      |          ^~~~
a.cc:10:10: error: expected ']' before numeric constant
   10 |     char[1000] takahashi = new char[1000];
      |          ^~~~
      |          ]
a.cc:10:9: error: structured binding declaration cannot have type 'char'
   10 |     char[1000] takahashi = new char[1000];
      |         ^
a.cc:10:9: note: type must be cv-qualified 'auto' or reference to cv-qualified 'auto'
a.cc:10:9: error: empty structured binding declaration
a.cc:10:16: error: expected initializer before 'takahashi'
   10 |     char[1000] takahashi = new char[1000];
      |                ^~~~~~~~~
a.cc:11:18: error: 'takahashi' was not declared in this scope
   11 |     scanf_s("%s",takahashi,1000);
      |                  ^~~~~~~~~
a.cc:11:5: error: 'scanf_s' was not declared in this scope; did you mean 'scanf'?
   11 |     scanf_s("%s",takahashi,1000);
      |     ^~~~~~~
      |     scanf
a.cc:13:14: error: expected primary-expression before 'char'
   13 |     matubi = char[sizeof(takahashi) - 1];
      |              ^~~~
a.cc:14:18: error: 's' was not declared in this scope
   14 |     if(matubi == s){
      |                  ^
Language: C++

#include <iostream>
using namespace std;

int main() {
  string S;
  
  if (S.at(¥0) == "s") {
    cout << S << "es" << endl;
  }
  
  else {
    cout << S << "s" << endl;
  }
}


Compiler output:
a.cc:7:12: error: extended character ¥ is not valid in an identifier
    7 |   if (S.at(¥0) == "s") {
      |            ^
a.cc: In function 'int main()':
a.cc:7:12: error: '\U000000a50' was not declared in this scope
    7 |   if (S.at(¥0) == "s") {
      |            ^~
Language: C++

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



int main() {
  string S;
  cin >> S;
  vector<string> 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:9:18: error: conflicting declaration 'std::vector<std::__cxx11::basic_string<char> > S'
    9 |   vector<string> S;
      |                  ^
a.cc:7:10: note: previous declaration as 'std::string S'
    7 |   string S;
      |          ^
a.cc:12:15: error: 's' was not declared in this scope
   12 |   if(S.at(0)==s){
      |               ^
a.cc:16:3: error: 'even' was not declared in this scope
   16 |   even {reverse(S.begin(), S.end());
      |   ^~~~
Language: C++

#include <iostream>
using namespace std;

int main() {
  string S;
  
  if (S.at(/0) == s) {
    cout << S << "es" << endl;
  }
  
  else {
    cout << S << "s" << endl;
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:12: error: expected primary-expression before '/' token
    7 |   if (S.at(/0) == s) {
      |            ^
a.cc:7:19: error: 's' was not declared in this scope
    7 |   if (S.at(/0) == s) {
      |                   ^
Language: C

#include <stdio.h>

int main(void){

  char string[999];
  
  f=scanf("%s",string);
  
  if(s[f-1]!='s')
  	printf("%ss",string);
  else
    printf("%ses",string);
  
  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:7:3: error: 'f' undeclared (first use in this function)
    7 |   f=scanf("%s",string);
      |   ^
main.c:7:3: note: each undeclared identifier is reported only once for each function it appears in
main.c:9:6: error: 's' undeclared (first use in this function)
    9 |   if(s[f-1]!='s')
      |      ^