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

#include <stdio.h>
#include <string.h>
 
int main(int argc, char *argv[])
{
  int count = 0;
  char S[2*100000+1];
  char T[2*100000+1];
  
  scanf("%s", S);
  scanf("%s", T);
  
  for( int i=0; i<length(S); i++) {
    if( *(S+i) != *(T+i) )
      count++;
  }
  
  printf("%d\n", count);
  
  return 0;
}
  

Compiler output:
main.c: In function 'main':
main.c:13:19: error: implicit declaration of function 'length' [-Wimplicit-function-declaration]
   13 |   for( int i=0; i<length(S); i++) {
      |                   ^~~~~~
Language: C

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

int main(int argc, char *argv[])
{
  int count = 0;
  char S[2*100000+1];
  char T[2*100000+1];
  
  scanf("%d", S);
  scanf("%d", T);
  
  for( int i=0; i<length(S); i++) {
    if( *(S+i) != *(T+i) )
      count++;
  }
  
  printf("%d\n", count);
  
  return 0;
}
  

Compiler output:
main.c: In function 'main':
main.c:13:19: error: implicit declaration of function 'length' [-Wimplicit-function-declaration]
   13 |   for( int i=0; i<length(S); i++) {
      |                   ^~~~~~
Language: C++

^atcoder challenge abc @owo_ganteng#3827

Compiler output:
a.cc:1:24: error: stray '@' in program
    1 | ^atcoder challenge abc @owo_ganteng#3827
      |                        ^
a.cc:1:36: error: stray '#' in program
    1 | ^atcoder challenge abc @owo_ganteng#3827
      |                                    ^
a.cc:1:1: error: expected unqualified-id before '^' token
    1 | ^atcoder challenge abc @owo_ganteng#3827
      | ^
Language: C++

#include <bits/stdc++.h>
 
using namespace std;
typedef long long ll;
const int MAXN = 2e5 + 5;
const int MAXD = 1e4 + 5;
const int MOD = 1e9 + 7;
const long double EPS = 1e-4;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
inline ll rand(ll a, ll b) {ll c = rng(); return a+((ll)abs(c))%(b-a+1);}

int n,m;
ll k;

ll pre1[MAXN],pre2[MAXN];

bool check(int nb)
{

int ret = 0;

for(int split = 0 ; split <= nb ; ++split)
{
int d1 = n - split;
int d2 = split;
if(d1 < 0)
  d1 = 0;
if(d2 < 0)
  d2 = 0;

if(d1 > n)
  d1 = n;
int left = (nb - d1 - d2);
d2+=left;
if(d2 > m)
 d2 = m;

if(d1 < 0)
  d1 = 0;
if(d2 < 0)
  d2 = 0;
if((d1 + d2) >= nb)) 
    continue;
bool ok1 = (d1 + d2) == nb;
bool ok2 = (pre1[d1] + pre2[d2]) <= k;
ret|=(ok1 and ok2);
}

return ret;
}

int main(){

        ios::sync_with_stdio(0);
        cin.tie(0);
        cin >> n >> m >> k;
        for(int i = 1 ; i <= n ; i++)
        {
          cin >> pre1[i];
          pre1[i]+=pre1[i - 1];
        }
         for(int i = 1 ; i <= m ; i++)
        {
          cin >> pre2[i];
          pre2[i]+=pre2[i - 1];
        }
        
        
        
      

        int lo = 0;
        int hi = n + m;
        int ans = 0;
        
 
        while(lo <= hi)
        {
            int mid = (lo + hi) >> 1;
            
            if(check(mid))
            {
                ans = mid;
                lo = mid + 1;
            }
            else
             hi = mid - 1;
        }
        cout << ans ;


      

       
}


Compiler output:
a.cc: In function 'bool check(int)':
a.cc:42:20: error: expected primary-expression before ')' token
   42 | if((d1 + d2) >= nb))
      |                    ^
Language: C++

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

int main(void) {
	int j = 0;
	char *s[200000], *t[200000];
	scanf("%s%s",&s, &t);

	for (int i = 0; i <= strlen(s); i++)
		if (s[i] != t[i])
			j++;
	printf("%d", j);
	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:37: error: cannot convert 'char**' to 'const char*'
    9 |         for (int i = 0; i <= strlen(s); i++)
      |                                     ^
      |                                     |
      |                                     char**
In file included from a.cc:2:
/usr/include/string.h:407:35: note:   initializing argument 1 of 'size_t strlen(const char*)'
  407 | extern size_t strlen (const char *__s)
      |                       ~~~~~~~~~~~~^~~
Language: Java

    import java.util.Scanner;
    public class Main {
    	 public static void main(String args[]){
    	Scanner scanner = new Scanner(System.in);
    	
    	String a=scanner.next();
    	String b=scanner.next();
           int n=0;
    	// 変数strの長さ分回す
    	for (int i = 0; i < a.length(); i++) {
    	    // strの先頭から1文字ずつString型にして取り出す
    	    String str1 = String.valueOf(a.charAt(i));
    	    String str2 = String.valueOf(b.charAt(i));
    	    if(str1.!equals(str2)){
    	    	n=n+1;
            }
    	   System.out.println(n);
     
    	}}
    }

Compiler output:
Main.java:14: error: <identifier> expected
    	    if(str1.!equals(str2)){
    	            ^
Main.java:14: error: ';' expected
    	    if(str1.!equals(str2)){
    	                         ^
2 errors
Language: Java

import java.util.Scanner;
public class ABC167 {
	 public static void main(String args[]){
	Scanner scanner = new Scanner(System.in);
	
	String a=scanner.next();
	String b=scanner.next();
       int n=0
	// 変数strの長さ分回す
	for (int i = 0; i < a.length(); i++) {
	    // strの先頭から1文字ずつString型にして取り出す
	    String str1 = String.valueOf(a.charAt(i));
	    String str2 = String.valueOf(b.charAt(i));
	    if(str1.!equals(str2)){
	    	n=n+1;
        }
	   System.out.println(n);

	}}
}

Compiler output:
Main.java:8: error: ';' expected
       int n=0
              ^
Main.java:14: error: <identifier> expected
	    if(str1.!equals(str2)){
	            ^
Main.java:14: error: ';' expected
	    if(str1.!equals(str2)){
	                         ^
3 errors
Language: C++

#include<iostream>
#include<cstdio>
#include<algorithm>
#include<cmath>
#include<cstring>
using namespace std;
int n;
string sa,sb;
int main()
{
	cin>>sa>>sb;
	n+=abs(sb.size()-sa.size());
	for(int i=0;i<=min(sa.size(),sb.size())-1;i++)
	{
		if(sa[i]!=sb[i])
			n++;
	}
	cout<<n;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:12:15: error: call of overloaded 'abs(std::__cxx11::basic_string<char>::size_type)' is ambiguous
   12 |         n+=abs(sb.size()-sa.size());
      |            ~~~^~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/14/cstdlib:79,
                 from /usr/include/c++/14/ext/string_conversions.h:43,
                 from /usr/include/c++/14/bits/basic_string.h:4154,
                 from /usr/include/c++/14/string:54,
                 from /usr/include/c++/14/bits/locale_classes.h:40,
                 from /usr/include/c++/14/bits/ios_base.h:41,
                 from /usr/include/c++/14/ios:44,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41,
                 from a.cc:1:
/usr/include/stdlib.h:980:12: note: candidate: 'int abs(int)'
  980 | extern int abs (int __x) __THROW __attribute__ ((__const__)) __wur;
      |            ^~~
In file included from /usr/include/c++/14/cstdlib:81:
/usr/include/c++/14/bits/std_abs.h:137:3: note: candidate: 'constexpr __float128 std::abs(__float128)'
  137 |   abs(__float128 __x)
      |   ^~~
/usr/include/c++/14/bits/std_abs.h:85:3: note: candidate: 'constexpr __int128 std::abs(__int128)'
   85 |   abs(__GLIBCXX_TYPE_INT_N_0 __x) { return __x >= 0 ? __x : -__x; }
      |   ^~~
/usr/include/c++/14/bits/std_abs.h:79:3: note: candidate: 'constexpr long double std::abs(long double)'
   79 |   abs(long double __x)
      |   ^~~
/usr/include/c++/14/bits/std_abs.h:75:3: note: candidate: 'constexpr float std::abs(float)'
   75 |   abs(float __x)
      |   ^~~
/usr/include/c++/14/bits/std_abs.h:71:3: note: candidate: 'constexpr double std::abs(double)'
   71 |   abs(double __x)
      |   ^~~
/usr/include/c++/14/bits/std_abs.h:61:3: note: candidate: 'long long int std::abs(long long int)'
   61 |   abs(long long __x) { return __builtin_llabs (__x); }
      |   ^~~
/usr/include/c++/14/bits/std_abs.h:56:3: note: candidate: 'long int std::abs(long int)'
   56 |   abs(long __i) { return __builtin_labs(__i); }
      |   ^~~
Language: C++

#include<iostream>
#include<cstdio>
#include<algorithm>
#include<cmath>
#include<cstring>
using namespace std;
int n;
string sa,sb;
int main()
{
	cin>>sa>>sb;
	n+=abs(sb.size()-sa.size());
	for(int i=0;i<=sa.size()-1;i++)
	{
		if(sa[i]!=sb[i])
			n++;
	}
	cout<<n;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:12:15: error: call of overloaded 'abs(std::__cxx11::basic_string<char>::size_type)' is ambiguous
   12 |         n+=abs(sb.size()-sa.size());
      |            ~~~^~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/14/cstdlib:79,
                 from /usr/include/c++/14/ext/string_conversions.h:43,
                 from /usr/include/c++/14/bits/basic_string.h:4154,
                 from /usr/include/c++/14/string:54,
                 from /usr/include/c++/14/bits/locale_classes.h:40,
                 from /usr/include/c++/14/bits/ios_base.h:41,
                 from /usr/include/c++/14/ios:44,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41,
                 from a.cc:1:
/usr/include/stdlib.h:980:12: note: candidate: 'int abs(int)'
  980 | extern int abs (int __x) __THROW __attribute__ ((__const__)) __wur;
      |            ^~~
In file included from /usr/include/c++/14/cstdlib:81:
/usr/include/c++/14/bits/std_abs.h:137:3: note: candidate: 'constexpr __float128 std::abs(__float128)'
  137 |   abs(__float128 __x)
      |   ^~~
/usr/include/c++/14/bits/std_abs.h:85:3: note: candidate: 'constexpr __int128 std::abs(__int128)'
   85 |   abs(__GLIBCXX_TYPE_INT_N_0 __x) { return __x >= 0 ? __x : -__x; }
      |   ^~~
/usr/include/c++/14/bits/std_abs.h:79:3: note: candidate: 'constexpr long double std::abs(long double)'
   79 |   abs(long double __x)
      |   ^~~
/usr/include/c++/14/bits/std_abs.h:75:3: note: candidate: 'constexpr float std::abs(float)'
   75 |   abs(float __x)
      |   ^~~
/usr/include/c++/14/bits/std_abs.h:71:3: note: candidate: 'constexpr double std::abs(double)'
   71 |   abs(double __x)
      |   ^~~
/usr/include/c++/14/bits/std_abs.h:61:3: note: candidate: 'long long int std::abs(long long int)'
   61 |   abs(long long __x) { return __builtin_llabs (__x); }
      |   ^~~
/usr/include/c++/14/bits/std_abs.h:56:3: note: candidate: 'long int std::abs(long int)'
   56 |   abs(long __i) { return __builtin_labs(__i); }
      |   ^~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main()
{
    char sr,pr;
    int i,j,count=0,dount=0;
    scanf("%s %s",&sr,&pr);
    for(i=0;i<strlen(sr);i++)
    {
        if(sr[i]!=pr[i]){count++;}
    }
    cout<<count;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:22: error: invalid conversion from 'char' to 'const char*' [-fpermissive]
    8 |     for(i=0;i<strlen(sr);i++)
      |                      ^~
      |                      |
      |                      char
In file included from /usr/include/c++/14/cstring:43,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:121,
                 from a.cc:1:
/usr/include/string.h:407:35: note:   initializing argument 1 of 'size_t strlen(const char*)'
  407 | extern size_t strlen (const char *__s)
      |                       ~~~~~~~~~~~~^~~
a.cc:10:14: error: invalid types 'char[int]' for array subscript
   10 |         if(sr[i]!=pr[i]){count++;}
      |              ^
a.cc:10:21: error: invalid types 'char[int]' for array subscript
   10 |         if(sr[i]!=pr[i]){count++;}
      |                     ^
Language: C++

#include <cstdio>
#include <algorithm>
#include <vector>
#include <stack>
#include <queue>
#include <string>
using namespace std;
char s[300000],t[300000];
int main(){
	int cnt = 0;
	scanf("%s %s",s,t);
	int len = strlen(s);
	for(int i=0;i<len;i++){
		if(s[i] != t[i]){
			cnt++;
		}
	}
	printf("%d\n",cnt);
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:19: error: 'strlen' was not declared in this scope
   12 |         int len = strlen(s);
      |                   ^~~~~~
a.cc:7:1: note: 'strlen' is defined in header '<cstring>'; this is probably fixable by adding '#include <cstring>'
    6 | #include <string>
  +++ |+#include <cstring>
    7 | using namespace std;
Language: C++

#include<iostream>
#include<string>

using namepsace std;

int main(){
  string s,t;
  cin>>s>>t;
  int count=0;
  for(int i=0;i<s.length();i++)
  {
    if(s[i]!=t[i])
      count++;
  }
  cout<<count;
  return 0;
}

Compiler output:
a.cc:4:7: error: expected nested-name-specifier before 'namepsace'
    4 | using namepsace std;
      |       ^~~~~~~~~
a.cc: In function 'int main()':
a.cc:7:3: error: 'string' was not declared in this scope
    7 |   string s,t;
      |   ^~~~~~
a.cc:7:3: note: suggested alternatives:
In file included from /usr/include/c++/14/iosfwd:41,
                 from /usr/include/c++/14/ios:40,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41,
                 from a.cc:1:
/usr/include/c++/14/bits/stringfwd.h:77:33: note:   'std::string'
   77 |   typedef basic_string<char>    string;
      |                                 ^~~~~~
In file included from /usr/include/c++/14/bits/locale_classes.h:40,
                 from /usr/include/c++/14/bits/ios_base.h:41,
                 from /usr/include/c++/14/ios:44:
/usr/include/c++/14/string:76:11: note:   'std::pmr::string'
   76 |     using string    = basic_string<char>;
      |           ^~~~~~
a.cc:8:3: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    8 |   cin>>s>>t;
      |   ^~~
      |   std::cin
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:8:8: error: 's' was not declared in this scope
    8 |   cin>>s>>t;
      |        ^
a.cc:8:11: error: 't' was not declared in this scope; did you mean 'tm'?
    8 |   cin>>s>>t;
      |           ^
      |           tm
a.cc:15:3: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   15 |   cout<<count;
      |   ^~~~
      |   std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
Language: Java

import java.util.Scanner;
public class Main{
  public static void main(String[] args){
 		Scanner sc = new Scanner(System.in);
    	String S = sc.next();
    	String T = sc.next();
    	int count = 0;
    if(S == T){
     	System.out.println("0"); 
    }else{
     	for(int i=0;i<S.length();i++){
          	if(S.charAt(i) != T.charAt(i)){
              	S.charAt(i) = T.charAt(i);
              	count++;
            }
        }
    }
    	System.out.println(count);
  }
}


Compiler output:
Main.java:13: error: unexpected type
              	S.charAt(i) = T.charAt(i);
              	        ^
  required: variable
  found:    value
1 error
Language: Java

import java.util.Scanner;
public class Main{
  public static void main(String[] args){
 		Scanner sc = new Scanner(System.in);
    	String S = sc.next();
    	String T = sc.next();
    	int count = 0;
    if(S == T){
     	System.out.println("0"); 
    }else{
     	for(int i=0;i<S.length();i++){
          	if(S.charAt(i) != T.charAt(i)){
              	S.charAt(i) == T.charAt(i);
              	count++;
            }
        }
    }
    	System.out.println(count);
  }
}


Compiler output:
Main.java:13: error: not a statement
              	S.charAt(i) == T.charAt(i);
              	            ^
1 error
Language: Java

import java.util.Scanner;
public class Main{
  public static void main(String[] args){
 		Scanner sc = new Scanner(System.in);
    	String S = sc.nextInt();
    	String T = sc.nextInt();
    	int count = 0;
    if(S == T){
     	System.out.println("0"); 
    }else{
     	for(int i=0;i<S.length();i++){
          	if(S.charAt(i) != T.charAt(i)){
              	S.charAt(i) = T.charAt(i);
              	count++;
            }
        }
    }
    	System.out.println(count);
  }
}


Compiler output:
Main.java:5: error: incompatible types: int cannot be converted to String
    	String S = sc.nextInt();
    	                     ^
Main.java:6: error: incompatible types: int cannot be converted to String
    	String T = sc.nextInt();
    	                     ^
Main.java:13: error: unexpected type
              	S.charAt(i) = T.charAt(i);
              	        ^
  required: variable
  found:    value
3 errors
Language: Java

import java.util.Scanner;
public class Main{
  public static void main(String[] args){
 		Scanner sc = new Scanner(System.in);
    	String S = sc.nextInt();
    	String T = sc.nextInt();
    	int count = 0;
    if(S == T){
     	System.out.println("0"); 
    }else{
     	for(int i=0;i<S.length();i++){
          	if(S.charAt(i) != T.charAt(i)){
              	S.charAt(i) == T.charAt(i);
              	count++;
            }
        }
    }
    	System.out.println(count);
  }
}


Compiler output:
Main.java:13: error: not a statement
              	S.charAt(i) == T.charAt(i);
              	            ^
1 error
Language: Java

public class Main{
  public static void main(String[] args){
 		Scanner sc = new Scanner(System.in);
    	String S = sc.nextInt();
    	String T = sc.nextInt();
    int count = 0;
    if(S == T){
     	System.out.println("0"); 
    }else{
     	for(int i=0;i<S.length();i++){
          	if(S.charAt(i) != T.charAt(i)){
              	S.chatAt(i) == T.charAt(i);
              	count++;
            }
        }
    }
    	System.out.println(count);
  }
}

Compiler output:
Main.java:12: error: not a statement
              	S.chatAt(i) == T.charAt(i);
              	            ^
1 error
Language: C++

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

void fst()
{
    ios::sync_with_stdio(0);
    cin.tie(0);
#ifndef ONLINE_JUDGE
    freopen("input.txt", "r", stdin);
#endif
}

                                                                                                                                                                                       

int_fast32_t main()
{
    string s,t;
    cin>>s>>t;
    int cnt=0;
    for(int i=0;i<s.size();i++){
        if(s[i]!=t[i]){
            cnt++;
        }
    }
    cout<<cnt;
}


Compiler output:
a.cc:15:1: error: '::main' must return 'int'
   15 | int_fast32_t main()
      | ^~~~~~~~~~~~
Language: C++

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

void fst()
{
    ios::sync_with_stdio(0);
    cin.tie(0);
#ifndef ONLINE_JUDGE
    freopen("input.txt", "r", stdin);
#endif
}
#define int long long 

                                                                                                                                                                                       

int_fast32_t main()
{
    string s,t;
    cin>>s>>t;
    int cnt=0;
    for(int i=0;i<s.size();i++){
        if(s[i]!=t[i]){
            cnt++;
        }
    }
    cout<<cnt;
}


Compiler output:
a.cc:16:1: error: '::main' must return 'int'
   16 | int_fast32_t main()
      | ^~~~~~~~~~~~
Language: C++

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

void fst()
{
    ios::sync_with_stdio(0);
    cin.tie(0);
#ifndef ONLINE_JUDGE
    freopen("input.txt", "r", stdin);
#endif
}
#define int long long 

                                                                                                                                                                                       

int_fast32_t main()
{
    fst();
    string s,t;
    cin>>s>>t;
    int cnt=0;
    for(int i=0;i<s.size();i++){
        if(s[i]!=t[i]){
            cnt++;
        }
    }
    cout<<cnt;
}


Compiler output:
a.cc:16:1: error: '::main' must return 'int'
   16 | int_fast32_t main()
      | ^~~~~~~~~~~~
Language: C++

#pragma GCC optimize("Ofast")
#include "bits/stdc++.h"
using namespace std;
using ll = long long;
using ull = unsigned long long;
#define PI 3.141592
#define MOD7 1000000007
#define LL_INF 9000000000000000000
#define LL_MINF -9000000000000000000
#define INT_INF 2000000000
#define INT_MINF -2000000000
#define all(a) (a).begin(), (a).end()
#define fi first
#define se second
const int dx[8] = {1, 0, -1, 0, 1, -1, -1, 1};
const int dy[8] = {0, 1, 0, -1, 1, 1, -1, -1};


int main(){
    string s, t;
    cin >> s >> t;
    int count = 0;
    int N = s.size();
    for(int i = 0; i < N; i++){
        if(S[i] != N[i]) count++;
    }
    cout << count << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:25:12: error: 'S' was not declared in this scope
   25 |         if(S[i] != N[i]) count++;
      |            ^
a.cc:25:21: error: invalid types 'int[int]' for array subscript
   25 |         if(S[i] != N[i]) count++;
      |                     ^
Language: C++

#include<bits/stdc++.h>
#define ll long long
#define pb push_back
long long int mod = (long long int)1000000007;
using namespace std;

void solve()
{
    ll i,j,k,n;
    std::cout.precision(10);
    int yes=0;
	ll ans=0;
  	string s,t;
  ci>>s>>t;
  for(i=0;i<s.size();i++)
  {
   if(s[i]!=t[i]
      {
       	ans++; 
      }
  }
      cout<<ans;
}

int main()
{
    ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cout.tie(NULL);
    int i,j,k;
    int t;
    std::cout.precision(10);
    t=1;
    while(t--)
    {
        solve();
        cout<<"\n";
    }
}

Compiler output:
a.cc: In function 'void solve()':
a.cc:14:3: error: 'ci' was not declared in this scope; did you mean 'i'?
   14 |   ci>>s>>t;
      |   ^~
      |   i
a.cc:17:17: error: expected ')' before '{' token
   17 |    if(s[i]!=t[i]
      |      ~          ^
      |                 )
   18 |       {
      |       ~          
a.cc:21:3: error: expected primary-expression before '}' token
   21 |   }
      |   ^
Language: Java

import java.util.Scanner;


class Main{
 public static void main(String args[]){
   Scanner sc = new Scanner(System.in);
   String s = sc.next();
   String t = sc.next();
   int count=0;
   
   for(int i=0;i<s.length();i++){
    if((s.charAt(i))==(t.chatAt(i))){
   count++;
    }
   }

   
     System.out.println(count);
   
 
 }
}


Compiler output:
Main.java:12: error: cannot find symbol
    if((s.charAt(i))==(t.chatAt(i))){
                        ^
  symbol:   method chatAt(int)
  location: variable t of type String
1 error
Language: Java

import java.util.Scanner;


class Main{
 public static void main(String args[]){
   Scanner sc = new Scanner(System.in);
   String s = sc.next();
   String t = sc.next();
   int count=0;
   
   for(int i=0;i<s.length();i++){
    if(s.charAt(i)==t.chatAt(i)){
   count++;
    }
   }

   
     System.out.println(count);
   
 
 }
}


Compiler output:
Main.java:12: error: cannot find symbol
    if(s.charAt(i)==t.chatAt(i)){
                     ^
  symbol:   method chatAt(int)
  location: variable t of type String
1 error
Language: C++

#include <bits/stdc++.h>
//#include <ext/pb_ds/assoc_container.hpp>
//using namespace __gnu_pbds;


using namespace std;

#define debug(x) cout << '>' << #x << ':' << x << endl;
#define loop(i,n) for(int i=0;i<(int)(n);i++)
#define foi(i,k,n) for(int i=(k); i<(int)(n); i+=1)
#define fod(i,n,k) for(int i=k; i>=(int)n; i-=1)
#define fast_io ios_base::sync_with_stdio(false) , cin.tie(NULL);
#define all(x) x.begin(), x.end()
#define tr(it, a) for(auto it = a.begin(); it != a.end(); it++)
#define endl "\n"

#define EPS 1e-12
#define INF 0x3f3f3f3f
#define PI 3.1415926535897932384626433832795
#define MOD 1000000007

#define fir first
#define sec second
#define pb push_back
#define mp make_pair

typedef long long int llint;
typedef pair<int, int> PII;
typedef vector<int> VI;
typedef vector<llint> VL;
typedef vector<string> VS;
typedef vector<PII> VII;
typedef vector<VI> VVI;
typedef map<int,int> MII;
typedef set<int> SI;
string tostr(int n) {stringstream rr;rr<<n;return rr.str();}
llint toint(string s) {stringstream ss(s); llint x; ss >> x; return x;}
//gp_hash_table<string, llint> table;


//int mpow(llint base, llint exp) {
  //base %= MOD;
  //llint result = 1;
  //while (exp > 0) {
    //if (exp & 1) result = ((llint)result * base) % MOD;
    //base = ((llint)base * base) % MOD;
    //exp >>= 1;
  //}
  //result %= MOD;
  //return result;
//}


//void makegraph(int n, int m){
	//int i, u, v;
	//while(m--){
		//cin>>u>>v;
		//u--, v--;
		//g[u].pb(v);
		//g[v].pb(u);
	//}
//}

//void dfs(int u, int par){
	//for(int v:g[u]){
		//if (v == par) continue;
		//dfs(v, u);
	//}
//}


// ------------------------------------------------------------------PRIYANSHU RAJPUT----------------------------------------------------------------  //


void solve(){
	string a, b;
	cin>>a>>b;
	int ans = 0;
	for(int i = 0; i < a.length(); ++i) ans += a[i] != b[i];
	cout ans;
}



int main() {
	fast_io;
    int t = 1;
    //cin >> t;
    while(t--) {
      solve();
    }
    return 0;
}



Compiler output:
a.cc: In function 'void solve()':
a.cc:80:13: error: expected ';' before 'ans'
   80 |         cout ans;
      |             ^~~~
      |             ;
Language: C++

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

int main(){
    string a, b;
    cin >> a >> b;
    int ans = 0:
    for(int i = 0; i < a.size(); i++){
        if(a[i] != b[i])++ans;
    }
    cout << ans << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:16: error: expected ',' or ';' before ':' token
    7 |     int ans = 0:
      |                ^
a.cc:8:20: error: 'i' was not declared in this scope
    8 |     for(int i = 0; i < a.size(); i++){
      |                    ^
Language: C++

                   /**Bismillahir Rahmanir Rahim.**/
/*
         Md.Fagun Molla
         18ICTCSE006
         BSMRSTU(SHIICT)
*/
#include<bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
using namespace std;
using ll=long long;
using db=double;
///***************************************************** CONSTANTS ******************************************************///

int const N=1e6+3;
ll MOD=1e9+7,fact[N];
const long long inf=(long long)1e18;
const long double PI=3.14159265358979;

///************************************************ CONTAINER DEFINITIONS ***********************************************///

typedef vector<int> vi;
typedef vector<ll> vl;
typedef pair<int,int> pii;
typedef pair<ll, ll> pll;
typedef vector<pii> vii;
typedef vector<pll> vll;

///************************************************ SHORT FORM KEYWORDS *************************************************///

#define PB push_back
#define F first
#define S second
#define MP make_pair
#define I insert
#define lb lower_bound
#define ub upper_bound
#define endl '\n'

///************************************************ SHORT FORM FUNCTIONS ************************************************///

#define loop(a,b) for(ll i=a;i<b;i++)
#define loopr(a,b) for(ll i=a-1;i>=b;i--)
#define mem(a,b) memset(a, b, sizeof(a) )
#define gcd(a,b) __gcd(a,b)
#define lcm(a,b) (a*(b/gcd(a,b)))
#define sa(v) sort(v.begin(),v.end())
#define sd(v) sort(v.begin(),v.end(),greater<>())
#define rev(s) reverse(s.begin(),s.end())
#define stll(x) stoll(x, nullptr, 10);
#define yes cout<<"YES"<<endl;
#define no cout<<"NO"<<endl;
#define mx(a) *max_element(all(a))
#define mn(a) *min_element(all(a))
#define all(a) a.begin(),a.end()
#define mxa(a,N) *max_element(a,a+N)
#define mna(a,N) *min_element(a,a+N)
#define print(a) {for(auto x:a)cout<<x<<" ";cout<<endl;}
#define io() ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);


///************************************************ SOLUTION STARTS HERE ************************************************///
///======================================================================================================================///

void solve(){
    string s,ss;
    cin>>s>>ss;
    int ans=0;
    for(int i=0; i<n; i++){
        if(s[i]!=ss[i])
            ans++;
    }
    cout<<ans<<endl;
}
int main()
{
    io();
    int T=1;//cin>>T;
    while(T--) solve();
    return 0;
}


Compiler output:
a.cc: In function 'void solve()':
a.cc:70:20: error: 'n' was not declared in this scope
   70 |     for(int i=0; i<n; i++){
      |                    ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main()
{
  string S, T; cin >> S >> T;
    int ans = 0;
    F0R(i, sz(S)) if (S[i] != T[i]) ans++;
    cout << ans << nl;
	
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:9: error: 'i' was not declared in this scope
    7 |     F0R(i, sz(S)) if (S[i] != T[i]) ans++;
      |         ^
a.cc:7:12: error: 'sz' was not declared in this scope
    7 |     F0R(i, sz(S)) if (S[i] != T[i]) ans++;
      |            ^~
a.cc:7:5: error: 'F0R' was not declared in this scope
    7 |     F0R(i, sz(S)) if (S[i] != T[i]) ans++;
      |     ^~~
a.cc:8:20: error: 'nl' was not declared in this scope; did you mean 'ynl'?
    8 |     cout << ans << nl;
      |                    ^~
      |                    ynl
Language: C++

#include <iostream>
#include <string>
using namespace std;
int main()
{
  string S, T;
  cin >> S >> T;
  int nas = 0;
  for (int i = 0; i < S.length(); i++) {
    if (S[i]!=T[i]) ans++;
  }
  cout << ans << endl;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:10:21: error: 'ans' was not declared in this scope; did you mean 'nas'?
   10 |     if (S[i]!=T[i]) ans++;
      |                     ^~~
      |                     nas
a.cc:12:11: error: 'ans' was not declared in this scope; did you mean 'nas'?
   12 |   cout << ans << endl;
      |           ^~~
      |           nas
Language: Java

import java.util.*;
public class Main
{
	public static void main(String[] args) {
		Scanner sc=new Scanner(System.in);
		String str1=sc.next();
		String str2=sc.next();
		int ans=0;
		for(int i=0;i<str.length();i++){
		    if(str1.chatAt(i)!=str1.chatAt(i))
		    ans++;
		}
		System.out.println(ans);
	}
}


Compiler output:
Main.java:9: error: cannot find symbol
		for(int i=0;i<str.length();i++){
		              ^
  symbol:   variable str
  location: class Main
Main.java:10: error: cannot find symbol
		    if(str1.chatAt(i)!=str1.chatAt(i))
		           ^
  symbol:   method chatAt(int)
  location: variable str1 of type String
Main.java:10: error: cannot find symbol
		    if(str1.chatAt(i)!=str1.chatAt(i))
		                           ^
  symbol:   method chatAt(int)
  location: variable str1 of type String
3 errors
Language: C

#include<stdio.h>
#include<stdlib.h>
int main(){
5 string S, T;
6 cin >> S >> T;
7 int N = S.size(), ans = 0;
8 for(int i = 0; i < N; ++i){
9 if(S[i] != T[i]) ++ans;
10 }
11 cout << ans << endl;
12 }

Compiler output:
main.c: In function 'main':
main.c:4:2: error: expected ';' before 'string'
    4 | 5 string S, T;
      |  ^~~~~~~
      |  ;
main.c:5:2: error: expected ';' before 'cin'
    5 | 6 cin >> S >> T;
      |  ^~~~
      |  ;
main.c:6:2: error: expected ';' before 'int'
    6 | 7 int N = S.size(), ans = 0;
      |  ^~~~
      |  ;
main.c:7:2: error: expected ';' before 'for'
    7 | 8 for(int i = 0; i < N; ++i){
      |  ^~~~
      |  ;
main.c:11:3: error: expected ';' before '}' token
   11 | 12 }
      |   ^~
      |   ;
Language: C++

#include<iostream>
using namespace std;
int main(){
5 string S, T;
6 cin >> S >> T;
7 int N = S.size(), ans = 0;
8 for(int i = 0; i < N; ++i){
9 if(S[i] != T[i]) ++ans;
10 }
11 cout << ans << endl;
12 }

Compiler output:
a.cc: In function 'int main()':
a.cc:4:2: error: expected ';' before 'string'
    4 | 5 string S, T;
      |  ^~~~~~~
      |  ;
a.cc:5:2: error: expected ';' before 'cin'
    5 | 6 cin >> S >> T;
      |  ^~~~
      |  ;
a.cc:6:2: error: expected ';' before 'int'
    6 | 7 int N = S.size(), ans = 0;
      |  ^~~~
      |  ;
a.cc:7:2: error: expected ';' before 'for'
    7 | 8 for(int i = 0; i < N; ++i){
      |  ^~~~
      |  ;
a.cc:7:18: error: 'i' was not declared in this scope
    7 | 8 for(int i = 0; i < N; ++i){
      |                  ^
a.cc:7:22: error: 'N' was not declared in this scope
    7 | 8 for(int i = 0; i < N; ++i){
      |                      ^
a.cc:10:3: error: expected ';' before 'cout'
   10 | 11 cout << ans << endl;
      |   ^~~~~
      |   ;
a.cc:11:3: error: expected ';' before '}' token
   11 | 12 }
      |   ^~
      |   ;
Language: C++

#include<iostream>
using namespace std;
int main(){
5 	string a,b;
6 	cin >>a>>b;
7 	int n=a.size(),ans = 0;
8 	for(int i = 0; i < n; ++i){
9 	if(a[i] != b[i]) 
  		ans++;
10  }
11 	cout << ans << endl;
12 	}

Compiler output:
a.cc: In function 'int main()':
a.cc:4:2: error: expected ';' before 'string'
    4 | 5       string a,b;
      |  ^      ~~~~~~
      |  ;
a.cc:5:2: error: expected ';' before 'cin'
    5 | 6       cin >>a>>b;
      |  ^      ~~~
      |  ;
a.cc:6:2: error: expected ';' before 'int'
    6 | 7       int n=a.size(),ans = 0;
      |  ^      ~~~
      |  ;
a.cc:7:2: error: expected ';' before 'for'
    7 | 8       for(int i = 0; i < n; ++i){
      |  ^      ~~~
      |  ;
a.cc:7:24: error: 'i' was not declared in this scope
    7 | 8       for(int i = 0; i < n; ++i){
      |                        ^
a.cc:7:28: error: 'n' was not declared in this scope
    7 | 8       for(int i = 0; i < n; ++i){
      |                            ^
a.cc:11:3: error: expected ';' before 'cout'
   11 | 11      cout << ans << endl;
      |   ^     ~~~~
      |   ;
a.cc:12:3: error: expected ';' before '}' token
   12 | 12      }
      |   ^     ~
      |   ;
Language: C

include <stdio.h>
#define length

char *input(char *buffer){
if (fgets(buffer, 256, stdin) == NULL || buffer[0] == '\n') {
        return 1;
    }
    length = strlen(buffer);
    if (buffer[length - 1] == '\n') {
        buffer[--length] = '\0';
    }
}
int main(void){
  	char s[length], t[length];
  	input(s);input(t);
    
    int cnt = 0;
    for(int i = 0;false;i++){
    	if(s[i == '\0')break;
        if(s[i] != t[i]){
            cnt++;
        }
    }
    printf("%d",i);
    
    return 0;
}

Compiler output:
main.c:1:9: error: expected '=', ',', ';', 'asm' or '__attribute__' before '<' token
    1 | include <stdio.h>
      |         ^
main.c: In function 'main':
main.c:14:14: error: array size missing in 's'
   14 |         char s[length], t[length];
      |              ^
main.c:14:25: error: array size missing in 't'
   14 |         char s[length], t[length];
      |                         ^
main.c:15:9: error: implicit declaration of function 'input' [-Wimplicit-function-declaration]
   15 |         input(s);input(t);
      |         ^~~~~
main.c:18:19: error: 'false' undeclared (first use in this function)
   18 |     for(int i = 0;false;i++){
      |                   ^~~~~
main.c:1:1: note: 'false' is defined in header '<stdbool.h>'; this is probably fixable by adding '#include <stdbool.h>'
  +++ |+#include <stdbool.h>
    1 | include <stdio.h>
main.c:18:19: note: each undeclared identifier is reported only once for each function it appears in
   18 |     for(int i = 0;false;i++){
      |                   ^~~~~
main.c:19:23: error: expected ']' before ')' token
   19 |         if(s[i == '\0')break;
      |                       ^
      |                       ]
main.c:24:5: error: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
   24 |     printf("%d",i);
      |     ^~~~~~
main.c:1:1: note: include '<stdio.h>' or provide a declaration of 'printf'
  +++ |+#include <stdio.h>
    1 | include <stdio.h>
main.c:24:5: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
   24 |     printf("%d",i);
      |     ^~~~~~
main.c:24:5: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:24:17: error: 'i' undeclared (first use in this function)
   24 |     printf("%d",i);
      |                 ^
Language: Java

Scanner scan = new Scanner(System.in);

String s_str = scan.nextLine();
String t_str = scan.nextLine();

if(s_str.equals(t_str)){
  System.out.print(0);
} else {
  String[] sArray = s_str.split("");
  String[] tArray = t_str.split("");
  int cnt = 0;
  
  for(int i = 0; i < sArray.length; i++){
    if(!sArray[0].equals(tArray[0])){
      cnt++;
    }
  }
  System.out.print(cnt);
}

Compiler output:
Main.java:1: error: unnamed classes are a preview feature and are disabled by default.
Scanner scan = new Scanner(System.in);
^
  (use --enable-preview to enable unnamed classes)
Main.java:6: error: class, interface, enum, or record expected
if(s_str.equals(t_str)){
^
Main.java:8: error: class, interface, enum, or record expected
} else {
^
Main.java:13: error: class, interface, enum, or record expected
  for(int i = 0; i < sArray.length; i++){
  ^
Main.java:13: error: class, interface, enum, or record expected
  for(int i = 0; i < sArray.length; i++){
                 ^
Main.java:13: error: class, interface, enum, or record expected
  for(int i = 0; i < sArray.length; i++){
                                    ^
Main.java:16: error: class, interface, enum, or record expected
    }
    ^
Main.java:19: error: class, interface, enum, or record expected
}
^
8 errors
Language: C++

//B
#include<iostream>
#include<cstring>
#include<cstdio>
using namespace std;
char a[200010],b[200010];
int len,ans;
int main()
{
	gets(a);
	gets(b);
	len=strlen(a);
	for(int i=0;i<len;i++)
		{
		if(a[i]!=b[i])
			ans++;
		}
	cout<<ans<<endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:9: error: 'gets' was not declared in this scope; did you mean 'getw'?
   10 |         gets(a);
      |         ^~~~
      |         getw
Language: C++

#include <bits/stdc++.h>

using namespace std; 

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

		int diff = 0;
		for (int i=0; i < S.size(); i++) {
			if (S[i] != T[i]) {
				diff += 1
			}
		}
		cout << diff;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:42: error: expected ';' before '}' token
   11 |                                 diff += 1
      |                                          ^
      |                                          ;
   12 |                         }
      |                         ~
Language: Java

import java.util.Scanner;

public class Main{
    public static void main (String[] args){
        Scanner scanner = new Scanner(System.in);
        String  s = scanner.nextString();
        String t = scanner.nextString();

        Char[] s_a = s.toCharArray();
        Char[] t_a = t.toCharArray();

        int count = 0;
        
        for(int i = 0; i <= s_a.length() -1; i++ ){
            if(!s_a[i].equals(t_a[i]){
                count +=1;
            }
        }
        System.out.println(count);
    }
}


Compiler output:
Main.java:15: error: ')' expected
            if(!s_a[i].equals(t_a[i]){
                                     ^
1 error
Language: C++

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
#define TEST int t;cin>>t;for(int T=1;T<=t;T++)
#define F first
#define S second
int main(){
  
  string s1,s2;
  cin>>s1>>S2;
  int l=s1.size();
  int a=0,b=0;
  for(int i=0;i<l;i++){
    if(s1[i]!=s2[i])
      a++;
  }
  cout<<a<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:12: error: 'S2' was not declared in this scope; did you mean 's2'?
   10 |   cin>>s1>>S2;
      |            ^~
      |            s2
Language: C

#include<stdio.h>
#tnclude<string.h>
int main()
{
  char s[1000000],t[1000000];
  scanf("%s",s);
  scanf("%s",t);
  int count=0;
  int s1=strlen(s);
  for(int i=0;i<s1;i++)
  {
    if(s[i]!=t[i])
    {
      count++;
    }
  }
  printf("%d",count);
  return 0;
}

Compiler output:
main.c:2:2: error: invalid preprocessing directive #tnclude; did you mean #include?
    2 | #tnclude<string.h>
      |  ^~~~~~~
      |  include
main.c: In function 'main':
main.c:9:10: error: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
    9 |   int s1=strlen(s);
      |          ^~~~~~
main.c:2:1: note: include '<string.h>' or provide a declaration of 'strlen'
    1 | #include<stdio.h>
  +++ |+#include <string.h>
    2 | #tnclude<string.h>
main.c:9:10: warning: incompatible implicit declaration of built-in function 'strlen' [-Wbuiltin-declaration-mismatch]
    9 |   int s1=strlen(s);
      |          ^~~~~~
main.c:9:10: note: include '<string.h>' or provide a declaration of 'strlen'
Language: C++

#include <bits\stdc++.h>
using namespace std;
//onst int INF=0x3f3f3f3f,maxn=;
//vector<int>v[maxn];
//ap<int,string>mp[maxn];
//ueue<int>q[maxn];
//int a[naxm],n,m;
string s,t;
int main()
{
	int i,j,k,ans=0;
	cin>>s>>t;
	for(i=0;i<s.size();i++)
	{
		if(s[i]!=t[i])
			ans++;
	}
	cout<<ans;
	return 0;
}


Compiler output:
a.cc:1:10: 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 S;
  string T;
  int ans = 0;
  cin >> S >> T;
  for (int i = 0; i < S.length; i++)
  {
    if (S[i] == T[i])
    {
      ans++;
    }
  }
  cout << ans << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:25: 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 '()' ?)
   10 |   for (int i = 0; i < S.length; i++)
      |                       ~~^~~~~~
      |                               ()
Language: C++

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

int main()
{
  string S;
  string T;
  int ans;
  cin >> S >> T;
  for (int i = 0; i < S.length; i++)
  {
    if (S[i] == T[i])
    {
      ans++;
    }
  }
  cout << ans << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:25: 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 '()' ?)
   10 |   for (int i = 0; i < S.length; i++)
      |                       ~~^~~~~~
      |                               ()
Language: C++

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

int main(void){
    string s1,s2;
    cin>>s1>>s2;int c=0;
    for(int i=0;i<n;i++)
    if(s1[i]!=s2[i])c++;
    cout<<c;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:19: error: 'n' was not declared in this scope
    8 |     for(int i=0;i<n;i++)
      |                   ^
Language: C++

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

int main()
{
	sting s,t;
	cin>>s>>t;
	int n = s.length();
	for (int i = 0; i < n; ++i)
	{
		if(s[i]!=t[i])
			ans++;
	}
	cout<<ans<<endl;

	
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:9: error: 'sting' was not declared in this scope
    6 |         sting s,t;
      |         ^~~~~
a.cc:7:14: error: 's' was not declared in this scope
    7 |         cin>>s>>t;
      |              ^
a.cc:7:17: error: 't' was not declared in this scope; did you mean 'tm'?
    7 |         cin>>s>>t;
      |                 ^
      |                 tm
a.cc:12:25: error: 'ans' was not declared in this scope; did you mean 'abs'?
   12 |                         ans++;
      |                         ^~~
      |                         abs
a.cc:14:15: error: 'ans' was not declared in this scope; did you mean 'abs'?
   14 |         cout<<ans<<endl;
      |               ^~~
      |               abs
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main()
{
  string s,t;
  cin>>s>>t;
  int len=s.size(),ctr=0;
  for(int i=0;i<len;i++)
  {
    if(s.at(i)==t.at(i))
    {
      ctr++;
    }
  }
  cout<<ctr;

Compiler output:
a.cc: In function 'int main()':
a.cc:15:13: error: expected '}' at end of input
   15 |   cout<<ctr;
      |             ^
a.cc:4:1: note: to match this '{'
    4 | {
      | ^
Language: C++

#include <bits/stdc++.h>
#define rep(i, n) for (int i = 0; i < (n); ++i)
using namespace std;
// using ll = long long;
// using P = pair<int, int>;

int main() {
  string s, t;
  cin >> s >> t;
  int ans = 0;
  rep(i,s.size()) {
    if (s[i] != t[i]) ans++:
  }
  cout << ans << endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:28: error: expected ';' before ':' token
   12 |     if (s[i] != t[i]) ans++:
      |                            ^
      |                            ;
Language: C++

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

int main()
{
	
	sting s,t;
	cin >> s >> t;
	
	cout << length(s)/3;
	
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:9: error: 'sting' was not declared in this scope
    8 |         sting s,t;
      |         ^~~~~
a.cc:9:16: error: 's' was not declared in this scope
    9 |         cin >> s >> t;
      |                ^
a.cc:9:21: error: 't' was not declared in this scope; did you mean 'tm'?
    9 |         cin >> s >> t;
      |                     ^
      |                     tm
a.cc:11:17: error: 'length' was not declared in this scope
   11 |         cout << length(s)/3;
      |                 ^~~~~~
Language: C++

    #include<bits/stdc++.h>
    using namespace std;
    int main()
    {
      string s,t;
      int count=0;
      cin>>s>>t;
      int n=s.length();
      for(int i=0;i<n;i++)
      {
        if(s[i]!=d[i])
        {count++;}
      }
      cout<<count;
    }

Compiler output:
a.cc: In function 'int main()':
a.cc:11:18: error: 'd' was not declared in this scope
   11 |         if(s[i]!=d[i])
      |                  ^
Language: C++

#include <iostream>
#include<bits/stdc++.h>
#include<cmath>
#include<string>
using namespace std;
int main()
{
  string s,t;
  int count=0;
  cin>>s>>t;
  int n=s.length();
  for(int i=0;i<n;i++)
  {
    if(s[i]!=d[i])
      count++;
  }
  cout<<count;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:14:14: error: 'd' was not declared in this scope
   14 |     if(s[i]!=d[i])
      |              ^
Language: C

#include<stdio.h>
int main() {
  char s[],t[],ans,count;
  int len;
  scanf("%s",s[]);
  scanf("%s",t[]);
  len=strlen(s[]);
  if (s[]==t[])
  {
		ans=0;
  }
 for (int i=0;i<len;i++)
 {
   strcmp(s[i],t[i];
   if (s[i]!==t[i])
   			count++;
 }
         ans=count;
          printf("%d",ans);
          return 0;
          }

Compiler output:
main.c: In function 'main':
main.c:3:8: error: array size missing in 's'
    3 |   char s[],t[],ans,count;
      |        ^
main.c:3:12: error: array size missing in 't'
    3 |   char s[],t[],ans,count;
      |            ^
main.c:5:16: error: expected expression before ']' token
    5 |   scanf("%s",s[]);
      |                ^
main.c:6:16: error: expected expression before ']' token
    6 |   scanf("%s",t[]);
      |                ^
main.c:7:7: error: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
    7 |   len=strlen(s[]);
      |       ^~~~~~
main.c:2:1: note: include '<string.h>' or provide a declaration of 'strlen'
    1 | #include<stdio.h>
  +++ |+#include <string.h>
    2 | int main() {
main.c:7:7: warning: incompatible implicit declaration of built-in function 'strlen' [-Wbuiltin-declaration-mismatch]
    7 |   len=strlen(s[]);
      |       ^~~~~~
main.c:7:7: note: include '<string.h>' or provide a declaration of 'strlen'
main.c:7:16: error: expected expression before ']' token
    7 |   len=strlen(s[]);
      |                ^
main.c:8:9: error: expected expression before ']' token
    8 |   if (s[]==t[])
      |         ^
main.c:14:4: error: implicit declaration of function 'strcmp' [-Wimplicit-function-declaration]
   14 |    strcmp(s[i],t[i];
      |    ^~~~~~
main.c:14:4: note: include '<string.h>' or provide a declaration of 'strcmp'
main.c:14:20: error: expected ')' before ';' token
   14 |    strcmp(s[i],t[i];
      |          ~         ^
      |                    )
main.c:14:12: error: passing argument 1 of 'strcmp' makes pointer from integer without a cast [-Wint-conversion]
   14 |    strcmp(s[i],t[i];
      |           ~^~~
      |            |
      |            char
main.c:14:12: note: expected 'const char *' but argument is of type 'char'
main.c:14:17: error: passing argument 2 of 'strcmp' makes pointer from integer without a cast [-Wint-conversion]
   14 |    strcmp(s[i],t[i];
      |                ~^~~
      |                 |
      |                 char
main.c:14:17: note: expected 'const char *' but argument is of type 'char'
main.c:16:33: error: expected ';' before '}' token
   16 |                         count++;
      |                                 ^
      |                                 ;
   17 |  }
      |  ~