criyle/codenet-compile-errors huggingface dataset:
Language: Java

import java.util.Scanner;
public class Main{
public static void main(String[] args){
	Scanner scan  = new Scanner(System.in);
  int K = scan.nextInt();
	String S= scan.next();
  if(S.length<=K){
		System.out.println(S);
}
  else if(S.length>=K){
    Syste.out.println(S.length(7) +"...");
  }
}
}

Compiler output:
Main.java:7: error: cannot find symbol
  if(S.length<=K){
      ^
  symbol:   variable length
  location: variable S of type String
Main.java:10: error: cannot find symbol
  else if(S.length>=K){
           ^
  symbol:   variable length
  location: variable S of type String
Main.java:11: error: method length in class String cannot be applied to given types;
    Syste.out.println(S.length(7) +"...");
                       ^
  required: no arguments
  found:    int
  reason: actual and formal argument lists differ in length
Main.java:11: error: package Syste does not exist
    Syste.out.println(S.length(7) +"...");
         ^
4 errors
Language: C++

#include<bits/stdc++.h>
using namespace std;
   long long int main(){
   ios::sync_with_stdio(0);
   cin.tie(0);
   string S;
   int k;
   cin>>k;
   cin>>S;
   long long int l =S.length();
    if(l==k)
      cout<<S<<"\n";
    else{
     // int e = l-k;
      S =S.substr(0,k);
      S+="...";
      cout<<S<<"\n";
    }
}


Compiler output:
a.cc:3:14: error: '::main' must return 'int'
    3 |    long long int main(){
      |              ^~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
   ios::sync_with_stdio(0);
   cin.tie(0);
   string S;
   int k;
   cin >> S>>k;
   int l =S.length();
    if(l==k)
      cout<<S<<"\n";
    else{
      int e = l-k;
      string s =S.substr(0,e);
      s.push('.');
          s.push('.');
          s.push('.');
      cout<<s<<"\n";
    }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:15:9: error: 'std::string' {aka 'class std::__cxx11::basic_string<char>'} has no member named 'push'
   15 |       s.push('.');
      |         ^~~~
a.cc:16:13: error: 'std::string' {aka 'class std::__cxx11::basic_string<char>'} has no member named 'push'
   16 |           s.push('.');
      |             ^~~~
a.cc:17:13: error: 'std::string' {aka 'class std::__cxx11::basic_string<char>'} has no member named 'push'
   17 |           s.push('.');
      |             ^~~~
Language: C++

#include <bits/stdc++.h>

using namespace std;
int k;
string s;
int main()
{
cin>>k>>s;
if(s.size()<=k)
    cout<<s<<endl;
    else 
    {
        for(int i=0;i<k;i++)
            cout<<s[i];8
            cout<<"..."<<endl;
    }


     return 0;                 
}

    



Compiler output:
a.cc: In function 'int main()':
a.cc:14:25: error: expected ';' before 'cout'
   14 |             cout<<s[i];8
      |                         ^
      |                         ;
   15 |             cout<<"..."<<endl;
      |             ~~~~
Language: C++

#include <bits/stdc++.h>

using namespace std;
int k;
string s;

int main()
{
cin>>s>>k;
if(s.size()<=k)
    cout<<s<<endl;
    else 
    {
        for(int i=0;i<k;i++)
            cout<<s[i]
            cout<<"..."<<endl;
    }


     return 0;                 
}

    


Compiler output:
a.cc: In function 'int main()':
a.cc:15:23: error: expected ';' before 'cout'
   15 |             cout<<s[i]
      |                       ^
      |                       ;
   16 |             cout<<"..."<<endl;
      |             ~~~~
Language: C++

#include <iostream>

using namespace std;

int main()
{
    int k;
    cin>>k;
    string s;
    cin>>s;
    if(s.size()==k)
        cout<<s<<endl;
    else
        for(int i=0; i<k; i++)
        {


           cout<<s[i];
           cout<<"...";
                return 0;
        }


Compiler output:
a.cc: In function 'int main()':
a.cc:21:10: error: expected '}' at end of input
   21 |         }
      |          ^
a.cc:6:1: note: to match this '{'
    6 | {
      | ^
Language: C++

#include <iostream>

using namespace std;

int main()
{
    int k;
    cin>>k;
    string s;
    cin>>s;
    if(s.size()==k)
        cout<<s<<endl;
    else
        for(int i=0; i<k; i++)
        {


           cout<<s[i];
           cout<<"..."
                return 0;
        }


Compiler output:
a.cc: In function 'int main()':
a.cc:19:23: error: expected ';' before 'return'
   19 |            cout<<"..."
      |                       ^
      |                       ;
   20 |                 return 0;
      |                 ~~~~~~ 
a.cc:21:10: error: expected '}' at end of input
   21 |         }
      |          ^
a.cc:6:1: note: to match this '{'
    6 | {
      | ^
Language: C++

#include <bits/stdc++.h>

using namespace std;

int main()
{
    int n;
    string s;
    cin>>n;
    cin>>s;
   
        if (s.size()>n){
        for(int i=0;i<n;i++)
    {
        cout<<s[i];
        
    }}
        
    else
     
              
      
        
        cout<<s;
                }

    return 0;
}

Compiler output:
a.cc:27:5: error: expected unqualified-id before 'return'
   27 |     return 0;
      |     ^~~~~~
a.cc:28:1: error: expected declaration before '}' token
   28 | }
      | ^
Language: C++

#include<iostream>
#include<string>
#include<cstring>
using namespace std;
bool func(string a){
  for(int i=0;a.length();i++)
  { if(isupper(a[i])){
      return false;
      exit;
  }
  }
  retrun true;
}
int main(){
  int k;
  cin>>k;
  string s;
  cin>>s;
  string s1="...";
 if(func(s))
 {
   if(s.length()<=k){
     cout<<s;}
   else{
     s.resize(k);
     s.append(s1);
     cout<<s;
   }
 }
   
 return 0;
 }

Compiler output:
a.cc: In function 'bool func(std::string)':
a.cc:12:3: error: 'retrun' was not declared in this scope
   12 |   retrun true;
      |   ^~~~~~
a.cc:13:1: warning: control reaches end of non-void function [-Wreturn-type]
   13 | }
      | ^
Language: C++

#include<iostream>
#include<string>
#include<cstring>
using namespace std;
bool func(string a){
  for(i=0;a.length();i++)
  { if(!islower(a[i])){
      return false;}
  }
  return true;
}
int main(){
  int k;
  cin>>k;
  string s;
  cin>>s;
  string s1="...";
 if(func(s))
 {
   if(s.length()<=k){
     cout<<s;}
   else{
     s.resize(k);
     s.append(s1);
     cout<<s;
   }
 }
   
 return 0;
 }

Compiler output:
a.cc: In function 'bool func(std::string)':
a.cc:6:7: error: 'i' was not declared in this scope
    6 |   for(i=0;a.length();i++)
      |       ^
Language: C++

#include<iostream>
#include<string>
#include<cstring>
using namespace std;
bool func(string a){
  for(int i=0;a.length();i++)
  { if(!islower(s[i])){
      return false;}
  }
  retrun true;
}
int main(){
  int k;
  cin>>k;
  string s;
  cin>>s;
  string s1="...";
 if(func(s))
 {
   if(s.length()<=k){
     cout<<s;}
   else{
     s.resize(k);
     s.append(s1);
     cout<<s;
   }
 }
   
 return 0;
 }

Compiler output:
a.cc: In function 'bool func(std::string)':
a.cc:7:17: error: 's' was not declared in this scope
    7 |   { if(!islower(s[i])){
      |                 ^
a.cc:10:3: error: 'retrun' was not declared in this scope
   10 |   retrun true;
      |   ^~~~~~
a.cc:11:1: warning: control reaches end of non-void function [-Wreturn-type]
   11 | }
      | ^
Language: C++

#include<iostream>
#include<string>
#include<cstring>
using namespace std;
bool func(string a){
  for(i=0;a.length();i++)
  { if(!islower(s[i])){
      return false;}
  }
  retrun true;
}
int main(){
  int k;
  cin>>k;
  string s;
  cin>>s;
  string s1="...";
 if(func(s))
 {
   if(s.length()<=k){
     cout<<s;}
   else{
     s.resize(k);
     s.append(s1);
     cout<<s;
   }
 }
   
 return 0;
 }

Compiler output:
a.cc: In function 'bool func(std::string)':
a.cc:6:7: error: 'i' was not declared in this scope
    6 |   for(i=0;a.length();i++)
      |       ^
a.cc:7:17: error: 's' was not declared in this scope
    7 |   { if(!islower(s[i])){
      |                 ^
a.cc:10:3: error: 'retrun' was not declared in this scope
   10 |   retrun true;
      |   ^~~~~~
a.cc:11:1: warning: control reaches end of non-void function [-Wreturn-type]
   11 | }
      | ^
Language: C++

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

int main()
{
  int k;
  string s;
  cin >> k;
  cin >> s;
  size_t size = s.length();
  
  if(size <= k){
    cout << s;
  }else{
    cout << s.substr(0,k) <<...;
  }
  
  return 0;
}
  
  
}


Compiler output:
a.cc: In function 'int main()':
a.cc:16:26: error: expected ';' before '<<' token
   16 |     cout << s.substr(0,k) <<...;
      |                          ^~~
      |                          ;
a.cc: At global scope:
a.cc:23:1: error: expected declaration before '}' token
   23 | }
      | ^
Language: C++

#define CRT_SECURE_NO_WARNINGS
#include<stdio.h>
int main (void){
  
  int K = 0;
  char S[99];
  int i,c = 0;
  
  scanf("%d",&K);
  scanf("%s",&S);
  
  for(i=0,S[i]=\n,i++){
    c = c+1;
  }
  
  if(K >= c){
    printf("%s", S);
    else {
      for (i=0,i=K-1,i++){
        printf("%s", S);
      }
      printf("...");
    }
    return 0;
  }

Compiler output:
a.cc:12:16: error: stray '\' in program
   12 |   for(i=0,S[i]=\n,i++){
      |                ^
a.cc: In function 'int main()':
a.cc:12:17: error: 'n' was not declared in this scope
   12 |   for(i=0,S[i]=\n,i++){
      |                 ^
a.cc:16:3: error: expected primary-expression before 'if'
   16 |   if(K >= c){
      |   ^~
a.cc:14:4: error: expected ';' before 'if'
   14 |   }
      |    ^
      |    ;
   15 | 
   16 |   if(K >= c){
      |   ~~
a.cc:16:3: error: expected primary-expression before 'if'
   16 |   if(K >= c){
      |   ^~
a.cc:14:4: error: expected ')' before 'if'
   14 |   }
      |    ^
      |    )
   15 | 
   16 |   if(K >= c){
      |   ~~
a.cc:12:6: note: to match this '('
   12 |   for(i=0,S[i]=\n,i++){
      |      ^
a.cc:18:5: error: expected '}' before 'else'
   18 |     else {
      |     ^~~~
a.cc:16:13: note: to match this '{'
   16 |   if(K >= c){
      |             ^
a.cc:19:25: error: expected ';' before ')' token
   19 |       for (i=0,i=K-1,i++){
      |                         ^
      |                         ;
a.cc:23:5: error: expected primary-expression before '}' token
   23 |     }
      |     ^
a.cc:22:21: error: expected ')' before '}' token
   22 |       printf("...");
      |                     ^
      |                     )
   23 |     }
      |     ~                
a.cc:19:11: note: to match this '('
   19 |       for (i=0,i=K-1,i++){
      |           ^
a.cc:23:5: error: expected primary-expression before '}' token
   23 |     }
      |     ^
Language: Java

import java.util.Scanner;

public class inin {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int K = sc.nextInt();
		String S = sc.next();
		
		if (S.length() <= K) {
			System.out.println(S);
		} else {
			System.out.println(S.substring(0, K) + "...");
		}

	}
}




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

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

int main(){
  int N;
  string S;
  cin >> N >> S;
  
  if(N>=S.size()){
    cout << S <<endl;
  }
  if(N<S.size){
    string U;
    U=substr(0,N)+"…";
    cout << U <<endl;
  }
}

    
    

Compiler output:
a.cc:1:10: fatal error: stdc++.h: No such file or directory
    1 | #include <stdc++.h>
      |          ^~~~~~~~~~
compilation terminated.
Language: C++

#include<iostream>
#include<string>
#include<cstring>
using namespace std;
int main(){
 int k;
 string s;
 string s2="...";
  if(islower(s)){
 if(s.length()<=k){
   cout<<s;}
  else{
    s.resize(k);
    s.append(s2);
    cout<<s;}
  }
 return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:13: error: no matching function for call to 'islower(std::string&)'
    9 |   if(islower(s)){
      |      ~~~~~~~^~~
In file included from /usr/include/c++/14/bits/basic_ios.h:37,
                 from /usr/include/c++/14/ios:46,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41,
                 from a.cc:1:
/usr/include/c++/14/bits/locale_facets.h:2637:5: note: candidate: 'template<class _CharT> bool std::islower(_CharT, const locale&)'
 2637 |     islower(_CharT __c, const locale& __loc)
      |     ^~~~~~~
/usr/include/c++/14/bits/locale_facets.h:2637:5: note:   candidate expects 2 arguments, 1 provided
In file included from /usr/include/c++/14/cctype:42,
                 from /usr/include/c++/14/bits/localefwd.h:42,
                 from /usr/include/c++/14/ios:43:
/usr/include/ctype.h:112:1: note: candidate: 'int islower(int)'
  112 | __exctype (islower);
      | ^~~~~~~~~
/usr/include/ctype.h:112:1: note:   no known conversion for argument 1 from 'std::string' {aka 'std::__cxx11::basic_string<char>'} to 'int'
  112 | __exctype (islower);
      | ^~~~~~~~~
Language: C++

#include<iostream>
#include<string>
using namespace std;
int main(){
 int k;
 string s;
 string s2="...";
  if(islower(s)){
 if(s.length()<=k){
   cout<<s;}
  else{
    s.resize(k);
    s.append(s2);
    cout<<s;}
  }
 return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:13: error: no matching function for call to 'islower(std::string&)'
    8 |   if(islower(s)){
      |      ~~~~~~~^~~
In file included from /usr/include/c++/14/bits/basic_ios.h:37,
                 from /usr/include/c++/14/ios:46,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41,
                 from a.cc:1:
/usr/include/c++/14/bits/locale_facets.h:2637:5: note: candidate: 'template<class _CharT> bool std::islower(_CharT, const locale&)'
 2637 |     islower(_CharT __c, const locale& __loc)
      |     ^~~~~~~
/usr/include/c++/14/bits/locale_facets.h:2637:5: note:   candidate expects 2 arguments, 1 provided
In file included from /usr/include/c++/14/cctype:42,
                 from /usr/include/c++/14/bits/localefwd.h:42,
                 from /usr/include/c++/14/ios:43:
/usr/include/ctype.h:112:1: note: candidate: 'int islower(int)'
  112 | __exctype (islower);
      | ^~~~~~~~~
/usr/include/ctype.h:112:1: note:   no known conversion for argument 1 from 'std::string' {aka 'std::__cxx11::basic_string<char>'} to 'int'
  112 | __exctype (islower);
      | ^~~~~~~~~
Language: C++

#include<iostream>
#include<string>
using namespace std;
int main(){
 int k;
 string s;
 string s2="...";
  if(islower(s)){
 if(s.length()<=k){
   cout<<s;}
  else{
    s.resize(k);
    s.append(s1);
    cout<<s;}}

 return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:13: error: no matching function for call to 'islower(std::string&)'
    8 |   if(islower(s)){
      |      ~~~~~~~^~~
In file included from /usr/include/c++/14/bits/basic_ios.h:37,
                 from /usr/include/c++/14/ios:46,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41,
                 from a.cc:1:
/usr/include/c++/14/bits/locale_facets.h:2637:5: note: candidate: 'template<class _CharT> bool std::islower(_CharT, const locale&)'
 2637 |     islower(_CharT __c, const locale& __loc)
      |     ^~~~~~~
/usr/include/c++/14/bits/locale_facets.h:2637:5: note:   candidate expects 2 arguments, 1 provided
In file included from /usr/include/c++/14/cctype:42,
                 from /usr/include/c++/14/bits/localefwd.h:42,
                 from /usr/include/c++/14/ios:43:
/usr/include/ctype.h:112:1: note: candidate: 'int islower(int)'
  112 | __exctype (islower);
      | ^~~~~~~~~
/usr/include/ctype.h:112:1: note:   no known conversion for argument 1 from 'std::string' {aka 'std::__cxx11::basic_string<char>'} to 'int'
  112 | __exctype (islower);
      | ^~~~~~~~~
a.cc:13:14: error: 's1' was not declared in this scope; did you mean 's2'?
   13 |     s.append(s1);
      |              ^~
      |              s2
Language: C++

#include<iostream>
#include<string>
using namespace std;
int main(){
 int k;
 string s;
 string s2="...";
 if(s.length()<=k){
   cout<<s;}
  else{
    s.resize(k);
    s.append(s1);
    cout<<s;}
 return 0;
}
    

Compiler output:
a.cc: In function 'int main()':
a.cc:12:14: error: 's1' was not declared in this scope; did you mean 's2'?
   12 |     s.append(s1);
      |              ^~
      |              s2
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main() {
	int n;
	cin >> n;
 string s;
  cin>> s;
  if(s.size()==n)
    cout<<s<<endl;
  else
  {
    string k=s.substring(0,n-1);
    cout<<k<<"..."<<endl;}
  
      return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:12:16: error: 'std::string' {aka 'class std::__cxx11::basic_string<char>'} has no member named 'substring'; did you mean 'substr'?
   12 |     string k=s.substring(0,n-1);
      |                ^~~~~~~~~
      |                substr
Language: C++

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


Compiler output:
a.cc: In function 'int main()':
a.cc:11:13: error: 'std::string' {aka 'class std::__cxx11::basic_string<char>'} has no member named 'substring'; did you mean 'substr'?
   11 |     cout<<s.substring(0,n-1)<<"..."<<endl;
      |             ^~~~~~~~~
      |             substr
Language: C++

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

int main() {
  int K;
  string S;
  cin >> K >> S;
  
  if (S.size() <= K) {
    cout << S <, endl;
  }
  else {
    for (int i = 0; i < K; i++) {
      cout << S.at(i);
    }
    cout << "..." << endl;
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:10:16: error: expected primary-expression before ',' token
   10 |     cout << S <, endl;
      |                ^
Language: C++

//============================================================================
// Name        : template.cpp
// Author      : 
// Version     :
// Copyright   : Your copyright notice
// Description : Hello World in C++, Ansi-style
//============================================================================

#include <iostream>
#include <algorithm>
#include <set>
#include <map>
#include <set>
#include <vector>
#include <string.h> // for memset in CF judge.
using namespace std;
#define _CRT_SECURE_NO_DEPRECATE // suppress some compilation warning messages (for VC++ users)
// Shortcuts for "common" data types in contests
typedef long long ll;
typedef vector<int> vi;
typedef pair<int, int> ii;
typedef vector<ii> vii;
typedef set<int> si;
typedef map<string, int> msi;
// To simplify repetitions/loops, Note: define your loop style and stick with it!
#define x first
#define y second
#define pb push_back
#define mp make_pair
#define REP(i, a, b) \
for (int i = int(a); i <= int(b); i++) // a to b, and variable i is local!
#define forn(i,n) \
for (int i =0; i<(n); i++)
#define TRvi(c, it) \
for (vi::iterator it = (c).begin(); it != (c).end(); it++)
#define TRvii(c, it) \
for (vii::iterator it = (c).begin(); it != (c).end(); it++)
#define TRmsi(c, it) \
for (msi::iterator it = (c).begin(); it != (c).end(); it++)
#define INF 2000000000 // 2 billion
// If you need to recall how to use memset:
#define MEMSET_INF 127 // about 2B
#define MEMSET_HALF_INF 63 // about 1B
//memset(dist, MEMSET_INF, sizeof dist); // useful to initialize shortest path distances
//memset(dp_memo, -1, sizeof dp_memo); // useful to initialize DP memoization table
//memset(arr, 0, sizeof arr); // useful to clear array of integers

int main() {
	int n; string s; cin >> n >> s;
	char arr[n]; int k = s.length()
	forn(i,n) {
		arr[i] = s[i];
	}
	string ans = string(arr);
	if(n < k) ans += "...";
	cout << ans << endl;
return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:33:1: error: expected ',' or ';' before 'for'
   33 | for (int i =0; i<(n); i++)
      | ^~~
a.cc:51:9: note: in expansion of macro 'forn'
   51 |         forn(i,n) {
      |         ^~~~
a.cc:51:14: error: 'i' was not declared in this scope
   51 |         forn(i,n) {
      |              ^
a.cc:33:16: note: in definition of macro 'forn'
   33 | for (int i =0; i<(n); i++)
      |                ^
Language: C

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

int main()
{
  int k;
  char s[101];
  
  if(strlen(s)>k)
  {
    for(int i = 1; i == k; i++)
    {  
    printf("%c", s[i]);
      if(i == k)
      {
        printf("...");
      };
    }else{
    printf("%c",*s);
  };
  return 0;
};


Compiler output:
main.c: In function 'main':
main.c:18:6: error: expected '}' before 'else'
   18 |     }else{
      |      ^~~~
Language: C

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

int main()
{
  int k;
  char s[101];
  
  if(strlen(s)>k)
  {
    for(i = 1; i == k; i++)
    {  
    printf("%c", s[i]);
      if(i == k)
      {
        printf("...");
      };
    }else{
    printf("%c",*s);
  };
  return 0;
};


Compiler output:
main.c: In function 'main':
main.c:11:9: error: 'i' undeclared (first use in this function)
   11 |     for(i = 1; i == k; i++)
      |         ^
main.c:11:9: note: each undeclared identifier is reported only once for each function it appears in
main.c:18:6: error: expected '}' before 'else'
   18 |     }else{
      |      ^~~~
Language: C++

#include <iostream>
#include<string.h>
 
using namespace std;
 
int main(){
	int k;
  	string s;
  	cin>>k;
    cin>>s;
  	if(std::s.length() < k)
    {
      cout<<s;
    }
  else if(s.length() < k) {
    for(int i ;i<=k;i++)
    {
      cout<<s[i];
    }
    cout<<"...";
    
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:17: error: 's' is not a member of 'std'; did you mean 'ws'?
   11 |         if(std::s.length() < k)
      |                 ^
      |                 ws
Language: C++

#include <iostream>
#include<string.h>
 
using namespace std;
 
int main(){
	int k;
  	string s;
  	cin>>k;
    cin>>s;
  	if(std::s.length() < k)
    {
      cout<<s;
    }
  else if(std::s.length() < k) {
    for(int i ;i<=k;i++)
    {
      cout<<s[i];
    }
    cout<<"...";
    
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:17: error: 's' is not a member of 'std'; did you mean 'ws'?
   11 |         if(std::s.length() < k)
      |                 ^
      |                 ws
a.cc:15:16: error: 's' is not a member of 'std'; did you mean 'ws'?
   15 |   else if(std::s.length() < k) {
      |                ^
      |                ws
Language: C++

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

int main(){
  int N;
  cin>>N;
  
  string str;
  cin>>str;
  
  if(str.size()>N){
    string subs = str.substr(0,N);
    subs +="...";
    cout<<subs;
  }
  else{
    cout<<str;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:19:2: error: expected '}' at end of input
   19 | }
      |  ^
a.cc:4:11: note: to match this '{'
    4 | int main(){
      |           ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main(){
  string S;
  int K;
  cin >> S >> K;
  if(S.size()<=K){
    cout << S << endl;
  }
    
    else{
      for(int i=o; i<K ; i++){
        cout << S.at(i) ;
      }
      cout << endl;
    }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:13:17: error: 'o' was not declared in this scope
   13 |       for(int i=o; i<K ; i++){
      |                 ^
Language: C

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

Compiler output:
main.c:1:10: fatal error: bits/stdc++.h: No such file or directory
    1 | #include <bits/stdc++.h>
      |          ^~~~~~~~~~~~~~~
compilation terminated.
Language: C++

/*بِسْمِ اللَّهِ الرَّحْمَنِ الرَّحِيم*/
#include <bits/stdc++.h>
using namespace std;
#define ll long long

void solve()
{
    ll a,b,c,n,m=0,i,j,l=0,r,k=0,kk=0,z=0,ans=0,sum=0,y=0,x,s1,sk;
    vector < ll > v;
    string s;

    cin >> n >> s;

    for(i=0;i<min(n,s.size());i++)
    {
        cout << s[i];
    }

    if(s.size()>n)
    {
        cout << "...";
    }

    cout << endl;

}

int main()
{
    int t;

    solve();
}
/*
5 3 1 5 14 11
4 4 3 2 1
*/


Compiler output:
a.cc: In function 'void solve()':
a.cc:14:18: error: no matching function for call to 'min(long long int&, std::__cxx11::basic_string<char>::size_type)'
   14 |     for(i=0;i<min(n,s.size());i++)
      |               ~~~^~~~~~~~~~~~
In file included from /usr/include/c++/14/algorithm:60,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 from a.cc:2:
/usr/include/c++/14/bits/stl_algobase.h:233:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::min(const _Tp&, const _Tp&)'
  233 |     min(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:233:5: note:   template argument deduction/substitution failed:
a.cc:14:18: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'})
   14 |     for(i=0;i<min(n,s.size());i++)
      |               ~~~^~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::min(const _Tp&, const _Tp&, _Compare)'
  281 |     min(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: note:   candidate expects 3 arguments, 2 provided
In file included from /usr/include/c++/14/algorithm:61:
/usr/include/c++/14/bits/stl_algo.h:5686:5: note: candidate: 'template<class _Tp> constexpr _Tp std::min(initializer_list<_Tp>)'
 5686 |     min(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5686:5: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_algo.h:5696:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::min(initializer_list<_Tp>, _Compare)'
 5696 |     min(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5696:5: note:   template argument deduction/substitution failed:
a.cc:14:18: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   14 |     for(i=0;i<min(n,s.size());i++)
      |               ~~~^~~~~~~~~~~~
Language: C++

#include<iostream>
#include<string.h>
using namespace std;
int main(){
	int numero;
	cin>>numero;
	char letra[101];
	cin>>strlwr(letra);
	for(int i=0;i<numero;i++){
		cout<<letra[i];
	}
	if(strlen(letra)>numero){
		cout<<"...";
	}
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:14: error: 'strlwr' was not declared in this scope; did you mean 'strstr'?
    8 |         cin>>strlwr(letra);
      |              ^~~~~~
      |              strstr
Language: C++

#include<iostream>
#include<string.h>
using namespace std;
int main(){
	int numero;
	cin>>numero;
	char letra[100];
	cin>>strlwr(letra);
	for(int i=0;i<numero;i++){
		cout<<letra[i];
	}
	if(strlen(letra)>numero){
		cout<<"...";
	}
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:14: error: 'strlwr' was not declared in this scope; did you mean 'strstr'?
    8 |         cin>>strlwr(letra);
      |              ^~~~~~
      |              strstr
Language: C++

#include<iostream>
#include<string.h>
using namespace std;
int main(){
	int numero;
	cin>>numero;
	char letra[101];
	cin>>letra;
	strlwr(letra);
	for(int i=0;i<numero;i++){
		cout<<letra[i];
	}
	if(strlen(letra)>numero){
		cout<<"...";
	}
}

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

#include<bits/stdc++.h>
typedef long long ll;
using namespace std;
typedef vector<ll>vi;
typedef pair<ll,ll>pi;
#define pb push_back
#define mp make_pair
#define all(v) v.begin(),v.end()
#define ff first
#define ss second
ll max(ll a,ll b){return (a>b?a:b);}
ll min(ll a,ll b){return (a<b?a:b);}
ll gcd(ll a,ll b)
{return (b?gcd(b,a%b):a);
}
void algo()
{
    ll n;
    cin>>n;
    string s;
    cin>>s;
    if(s>k)
        cout<<s.substr(0,k)<<"...";
    else
        cout<<s;
}
int main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout<<setprecision(20);
    ll t=1;//cin>>t;
    while(t--)
    {
        algo();
	cout<<endl;
    }
    return 0;
}


Compiler output:
a.cc: In function 'void algo()':
a.cc:22:10: error: 'k' was not declared in this scope
   22 |     if(s>k)
      |          ^
Language: C++

#include <iostream>
#include <string>
using namespace std;
int main()
{
  string s;
  int K,a;
  cin >> K >> s;
  a=a.size();
  if(s.size()>K){
  s.erase(K);
    s+="...";
  }
  cout << s;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:7: error: request for member 'size' in 'a', which is of non-class type 'int'
    9 |   a=a.size();
      |       ^~~~
Language: C++

#include <iostream>
#include <string>
using namespace std;
int main()
{
  string s;
  int K;
  cin >> K >> s;
  if(s.size()>K){
  s.erase(K)
    s+="...";
  }
  cout << s;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:13: error: expected ';' before 's'
   10 |   s.erase(K)
      |             ^
      |             ;
   11 |     s+="...";
      |     ~
Language: C

#include<stdio.h>
#include<string.h>
 
int main(){
  int K;
  while(scanf("%d",&K)==0);
  
  char S[101];
  while(fgets(S,sizeof S,stdin)==0)
  
  int l=strlen(S);
  char a[]="...";
  char T[101];
  
  int i;
  for(i=0;i<K;i++){
   T[i]=S[i];
  }
  
  if(l<=K){
    printf("%s\n",S);
  }else if(l>K){
    printf("%s%s\n",T,a);
  }
  
  
  
  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:11:3: error: expected expression before 'int'
   11 |   int l=strlen(S);
      |   ^~~
main.c:20:6: error: 'l' undeclared (first use in this function)
   20 |   if(l<=K){
      |      ^
main.c:20:6: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include<stdio.h>
#include<string.h>
 
int main(){
  int K;
  while(scanf("%d",&K)==0)
  char S[101];
  fgets(S,sizeof S,stdin);
  int l=strlen(S);
  char a[]="...";
  char T[101];
  
  int i;
  for(i=0;i<K;i++){
   T[i]=S[i];
  }
  
  if(l<=K){
    printf("%s\n",S);
  }else if(l>K){
    printf("%s%s\n",T,a);
  }
  
  
  
  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:7:3: error: expected expression before 'char'
    7 |   char S[101];
      |   ^~~~
main.c:8:9: error: 'S' undeclared (first use in this function)
    8 |   fgets(S,sizeof S,stdin);
      |         ^
main.c:8:9: note: each undeclared identifier is reported only once for each function it appears in
Language: C++

#include <iostream>
#include <string>

using namespace std;

int main()
{
    int K;
    string S;
    cin >> K >> S;
    id(K < S.size())
    {
        for (int i = 0; i < K; i++)
        {
            cout << S[i];
        }
        cout << "..." << endl;
    }
    else
    {
        cout << S << endl;
    }
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:5: error: 'id' was not declared in this scope
   11 |     id(K < S.size())
      |     ^~
a.cc:19:5: error: 'else' without a previous 'if'
   19 |     else
      |     ^~~~
Language: C

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

int main() {

  int K;
  string S;
  cin >> K;
  cin >> S;
    if(S.size() <K+1){
    cout << S << endl;}
    
    else {
      char a;
      for (int i=0; i<K; i++){
       a = S.at(i); 
       cout << a ;
      }
     cout << "..." << endl;
    }
  
}


Compiler output:
main.c:1:10: fatal error: bits/stdc++.h: No such file or directory
    1 | #include <bits/stdc++.h>
      |          ^~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include<iostream>
#include<bits/stdc++.h>
#include<algorithm>
#define Read_Fast    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define PI acos(-1)
#define all(a) a.begin(),a.end()
#define f first
#define s second
#define pb push_back
#define ppb pop_back
#define pf push_front
#define ppf pop_front
#define mp make_pair
#define f0(i,n) for(i=0;i<n;i++)
#define f1(i,n) for(i=1;i<n;i++)
#define f1n(i,n) for(i=1;i<=n;i++)
#define szf sizeof()
#define sz size()
#define ln length()
using namespace std;
using ll=long long;
const int N=2e5+5;
//ll cum[N+4];
int main()
{
    string str;
    int n;
    cin>>n>>str;
    int len=str.size();
    if(n>=len)
    {
        cout<<str<<endl;
    }
    else{
        for(int i=0;i<len;i++)
        {
            cout<<str[i];
        }
        cout<<"..."<<endl;
    }
    return 0;1
}


Compiler output:
a.cc: In function 'int main()':
a.cc:41:15: error: expected ';' before '}' token
   41 |     return 0;1
      |               ^
      |               ;
   42 | }
      | ~
Language: C++

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

int main() {
  int K;
  string S;
  cin >> K >> S;
  
  if(K >= S.size()){
    cout << S << endl;
  }
  else{
    for(int i = 0; i < K; i++){
      cout << S.at(i);
      endl;
    }
  }

 
  
}


Compiler output:
a.cc: In function 'int main()':
a.cc:15:11: error: statement cannot resolve address of overloaded function
   15 |       endl;
      |           ^
Language: Java

import java.util.*;
class Main{
public static void main(String[]args){
Scanner sc=new Scanner(System.in);
  int k=sc.nextInt();
  String po=sc.next();
  if(po.length()>k){
  System.out.println(po.subString(0,k)+"...");
  }else
  System.out.println(po);
}
}


Compiler output:
Main.java:8: error: cannot find symbol
  System.out.println(po.subString(0,k)+"...");
                       ^
  symbol:   method subString(int,int)
  location: variable po of type String
1 error
Language: C++

#include <iostream>
#include <string>

using namespace std;

int main(int argc, char** argv)
{
  string str;
  int len;
  cin >> len;
  cin >> str;
  if(str.length > len)
  {
    string outstr = str.substring(0, len);
    cout << outstr << "..." << endl;
  }
  else
  {
    cout << str << endl;
  }
  return 0;
}

Compiler output:
a.cc: In function 'int main(int, char**)':
a.cc:12:10: error: invalid use of member function 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size_type std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::length() const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>; size_type = long unsigned int]' (did you forget the '()' ?)
   12 |   if(str.length > len)
      |      ~~~~^~~~~~
      |                ()
a.cc:14:25: error: 'std::string' {aka 'class std::__cxx11::basic_string<char>'} has no member named 'substring'; did you mean 'substr'?
   14 |     string outstr = str.substring(0, len);
      |                         ^~~~~~~~~
      |                         substr
Language: C++

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

int main(){
   int k;
    cin>>k;
    string s;
  cin>>s;
   int p=s.size();
    if(p<=k){
      cout<<s<<endl;
     }
    else{
      cout<<s.substr(0,k-1)<<"..."<<endl;
    }
}

Compiler output:
a.cc:1:2: error: invalid preprocessing directive #inlcude; did you mean #include?
    1 | #inlcude<bits/stdc++.h>
      |  ^~~~~~~
      |  include
a.cc: In function 'int main()':
a.cc:6:5: error: 'cin' was not declared in this scope
    6 |     cin>>k;
      |     ^~~
a.cc:1:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
  +++ |+#include <iostream>
    1 | #inlcude<bits/stdc++.h>
a.cc:7:5: error: 'string' was not declared in this scope
    7 |     string s;
      |     ^~~~~~
a.cc:1:1: note: 'std::string' is defined in header '<string>'; this is probably fixable by adding '#include <string>'
  +++ |+#include <string>
    1 | #inlcude<bits/stdc++.h>
a.cc:8:8: error: 's' was not declared in this scope
    8 |   cin>>s;
      |        ^
a.cc:11:7: error: 'cout' was not declared in this scope
   11 |       cout<<s<<endl;
      |       ^~~~
a.cc:11:7: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:11:16: error: 'endl' was not declared in this scope
   11 |       cout<<s<<endl;
      |                ^~~~
a.cc:1:1: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
  +++ |+#include <ostream>
    1 | #inlcude<bits/stdc++.h>
a.cc:14:7: error: 'cout' was not declared in this scope
   14 |       cout<<s.substr(0,k-1)<<"..."<<endl;
      |       ^~~~
a.cc:14:7: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:14:37: error: 'endl' was not declared in this scope
   14 |       cout<<s.substr(0,k-1)<<"..."<<endl;
      |                                     ^~~~
a.cc:14:37: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
Language: C++

#define _GLIBCXX_DEBUG
#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
int main(){
  int k;
  cin >> k;
  string s;
  cin >> s;
  int l = s.zise();
  if(l<=k)
    cout << s << endl;
  else{
    for(int i=0; i<k; i++)
      cout << s[i];
    cout << "..." << endl;
  }
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:10:13: error: 'std::string' {aka 'class std::__cxx11::basic_string<char>'} has no member named 'zise'
   10 |   int l = s.zise();
      |             ^~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main(){
  int n;
  cin>>n;
  string s;
  cin>>s;
  int m=s.length();
  string sub="";
  string ans="..."
  if(m>n){
    for(int i=0;i<n;i++) sub+=s[i];
  }
  if(m>n)
  cout<<sub+ans<<endl;
  else
    cout<<s<<endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:3: error: expected ',' or ';' before 'if'
   11 |   if(m>n){
      |   ^~
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main(){
  int n;
  cin>>n;
  string s;
  cin>>s;
  int m=s.length();
  string sub="";
  string ans="..."
  if(m>n){
    for(int i=0;i<n;i++) sub+=s[i];
  }
  cout<<sub+ans<<endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:3: error: expected ',' or ';' before 'if'
   11 |   if(m>n){
      |   ^~
Language: C++

#include <bits/stdc++.h>

using namespace std;

#define endl '\n'

int main(){

  ios_base :: sync_with_stdio(false);
  cin.tie(NULL);

  string s;
  int k;
  cin >> k >> s;

  for(int i=0;i<min(s.size(),k);i++)
    cout << s[i];

  if(s.size() > k)
    cout << "...";

  cout << endl;
  

  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:16:20: error: no matching function for call to 'min(std::__cxx11::basic_string<char>::size_type, int&)'
   16 |   for(int i=0;i<min(s.size(),k);i++)
      |                 ~~~^~~~~~~~~~~~
In file included 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_algobase.h:233:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::min(const _Tp&, const _Tp&)'
  233 |     min(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:233:5: note:   template argument deduction/substitution failed:
a.cc:16:20: note:   deduced conflicting types for parameter 'const _Tp' ('long unsigned int' and 'int')
   16 |   for(int i=0;i<min(s.size(),k);i++)
      |                 ~~~^~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::min(const _Tp&, const _Tp&, _Compare)'
  281 |     min(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: note:   candidate expects 3 arguments, 2 provided
In file included from /usr/include/c++/14/algorithm:61:
/usr/include/c++/14/bits/stl_algo.h:5686:5: note: candidate: 'template<class _Tp> constexpr _Tp std::min(initializer_list<_Tp>)'
 5686 |     min(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5686:5: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_algo.h:5696:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::min(initializer_list<_Tp>, _Compare)'
 5696 |     min(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5696:5: note:   template argument deduction/substitution failed:
a.cc:16:20: note:   mismatched types 'std::initializer_list<_Tp>' and 'long unsigned int'
   16 |   for(int i=0;i<min(s.size(),k);i++)
      |                 ~~~^~~~~~~~~~~~
Language: C++

#ifdef MY_LOCAL
namespace sandbox {
#endif

using namespace std;
int main()
{
	int k;
	cin >> k;

	string s;
	cin >> s;

	if (s.size() <= k)
		cout << s << endl;
	else
		cout << s.substr(0, k) + "..." << endl;

	return 0;
}

#ifdef MY_LOCAL
}
#endif

Compiler output:
a.cc: In function 'int main()':
a.cc:9:9: error: 'cin' was not declared in this scope
    9 |         cin >> k;
      |         ^~~
a.cc:1:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
  +++ |+#include <iostream>
    1 | #ifdef MY_LOCAL
a.cc:11:9: error: 'string' was not declared in this scope
   11 |         string s;
      |         ^~~~~~
a.cc:1:1: note: 'std::string' is defined in header '<string>'; this is probably fixable by adding '#include <string>'
  +++ |+#include <string>
    1 | #ifdef MY_LOCAL
a.cc:12:16: error: 's' was not declared in this scope
   12 |         cin >> s;
      |                ^
a.cc:15:17: error: 'cout' was not declared in this scope
   15 |                 cout << s << endl;
      |                 ^~~~
a.cc:15:17: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:15:30: error: 'endl' was not declared in this scope
   15 |                 cout << s << endl;
      |                              ^~~~
a.cc:1:1: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
  +++ |+#include <ostream>
    1 | #ifdef MY_LOCAL
a.cc:17:17: error: 'cout' was not declared in this scope
   17 |                 cout << s.substr(0, k) + "..." << endl;
      |                 ^~~~
a.cc:17:17: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:17:51: error: 'endl' was not declared in this scope
   17 |                 cout << s.substr(0, k) + "..." << endl;
      |                                                   ^~~~
a.cc:17:51: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
Language: C++

#include <iostream>
using namespace std;

int main(){
	int n;
  char s[110];
  cin >> n;
  for(int i=0; i<n; i++) cin >> s[i];
  for(int i=0; i<n; i++) cout << s[i];
  char a = '0';
  cin >> a;
  if(a != '0') cout << "..."
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:29: error: expected ';' before '}' token
   12 |   if(a != '0') cout << "..."
      |                             ^
      |                             ;
   13 | }
      | ~
Language: C++

#unclude<bits/stdc++.h>
using namespace std;
int main()
{
	int k,size=0;
	string str_custom;
	cin>>k>>str_custom;
	size=str_custom.size();
	if (size<k||size=k)
	   cout<<str_custom;
	else
	{
		strcpy(str_custom+k-1,str_custom+k+size-1);
		cout<<str_custom<<"...";
	}
	return 0;
}

Compiler output:
a.cc:1:2: error: invalid preprocessing directive #unclude; did you mean #include?
    1 | #unclude<bits/stdc++.h>
      |  ^~~~~~~
      |  include
a.cc: In function 'int main()':
a.cc:6:9: error: 'string' was not declared in this scope
    6 |         string str_custom;
      |         ^~~~~~
a.cc:1:1: note: 'std::string' is defined in header '<string>'; this is probably fixable by adding '#include <string>'
  +++ |+#include <string>
    1 | #unclude<bits/stdc++.h>
a.cc:7:9: error: 'cin' was not declared in this scope
    7 |         cin>>k>>str_custom;
      |         ^~~
a.cc:1:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
  +++ |+#include <iostream>
    1 | #unclude<bits/stdc++.h>
a.cc:7:17: error: 'str_custom' was not declared in this scope
    7 |         cin>>k>>str_custom;
      |                 ^~~~~~~~~~
a.cc:9:19: error: lvalue required as left operand of assignment
    9 |         if (size<k||size=k)
      |             ~~~~~~^~~~~~
a.cc:10:12: error: 'cout' was not declared in this scope
   10 |            cout<<str_custom;
      |            ^~~~
a.cc:10:12: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:13:17: error: 'strcpy' was not declared in this scope
   13 |                 strcpy(str_custom+k-1,str_custom+k+size-1);
      |                 ^~~~~~
a.cc:1:1: note: 'strcpy' is defined in header '<cstring>'; this is probably fixable by adding '#include <cstring>'
  +++ |+#include <cstring>
    1 | #unclude<bits/stdc++.h>
a.cc:14:17: error: 'cout' was not declared in this scope
   14 |                 cout<<str_custom<<"...";
      |                 ^~~~
a.cc:14:17: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
Language: C++

#unclude<bits/stdc++.h>
using namespace std;
int main()
{
	int k,size=0;
	string str_custom;
	cin>>k>>str_custom;
	size=str_custom.size();
	if (size<k||size=k)
	   cout<<str_custom;
	else
	{
		strcpy(str_custom+k-1, str_custom+k+size-1);
		cout<<str_custom<<"...";
	}
	return 0;
}

Compiler output:
a.cc:1:2: error: invalid preprocessing directive #unclude; did you mean #include?
    1 | #unclude<bits/stdc++.h>
      |  ^~~~~~~
      |  include
a.cc: In function 'int main()':
a.cc:6:9: error: 'string' was not declared in this scope
    6 |         string str_custom;
      |         ^~~~~~
a.cc:1:1: note: 'std::string' is defined in header '<string>'; this is probably fixable by adding '#include <string>'
  +++ |+#include <string>
    1 | #unclude<bits/stdc++.h>
a.cc:7:9: error: 'cin' was not declared in this scope
    7 |         cin>>k>>str_custom;
      |         ^~~
a.cc:1:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
  +++ |+#include <iostream>
    1 | #unclude<bits/stdc++.h>
a.cc:7:17: error: 'str_custom' was not declared in this scope
    7 |         cin>>k>>str_custom;
      |                 ^~~~~~~~~~
a.cc:9:19: error: lvalue required as left operand of assignment
    9 |         if (size<k||size=k)
      |             ~~~~~~^~~~~~
a.cc:10:12: error: 'cout' was not declared in this scope
   10 |            cout<<str_custom;
      |            ^~~~
a.cc:10:12: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:13:17: error: 'strcpy' was not declared in this scope
   13 |                 strcpy(str_custom+k-1, str_custom+k+size-1);
      |                 ^~~~~~
a.cc:1:1: note: 'strcpy' is defined in header '<cstring>'; this is probably fixable by adding '#include <cstring>'
  +++ |+#include <cstring>
    1 | #unclude<bits/stdc++.h>
a.cc:14:17: error: 'cout' was not declared in this scope
   14 |                 cout<<str_custom<<"...";
      |                 ^~~~
a.cc:14:17: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
Language: C++

#include <bits/stdc++.h>
#define rep(i, n) for (long long i = 0, max_i = (n); i < max_i; i++)
#define repi(i, a, b) for (long long i = (a), max_i = (b); i < max_i; i++)
using namespace std;
typedef long long ll;

int main() {
  int K; string S; cin >> S;
  S = S.substr(0,k) + "..." if S.size() > K
  cout << S << endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:18: error: 'k' was not declared in this scope
    9 |   S = S.substr(0,k) + "..." if S.size() > K
      |                  ^