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

#include <bits/stdc++.h>
using namespace std;
 
int main(){
  string A,X,C;
  cin >> A >> X >> C;
  cout << 'A' + char.at(0) + 'C' << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:17: error: expected primary-expression before 'char'
    7 |   cout << 'A' + char.at(0) + 'C' << endl;
      |                 ^~~~
Language: C++

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

int main(){
  string X;
  cin >> A >> X >> C;
  cout << 'A' + char.at(0) + 'C' << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:10: error: 'A' was not declared in this scope
    6 |   cin >> A >> X >> C;
      |          ^
a.cc:6:20: error: 'C' was not declared in this scope
    6 |   cin >> A >> X >> C;
      |                    ^
a.cc:7:17: error: expected primary-expression before 'char'
    7 |   cout << 'A' + char.at(0) + 'C' << endl;
      |                 ^~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  string A, B, C;
  cin >> A >> B >> C;
  char b = B.at(0)
  cout << A << b << C << endl; 
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:3: error: expected ',' or ';' before 'cout'
    8 |   cout << A << b << C << endl;
      |   ^~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
string A, B, C;
  cin >> A >> B >> C;
  char b = B.at(0)
    cout << A << b << C << endl; 
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:5: error: expected ',' or ';' before 'cout'
    8 |     cout << A << b << C << endl;
      |     ^~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
string A, B, C;
  cin >> A >> B >> c;
  char b = B.at(0)
    cout << A << b << C << endl; 
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:20: error: 'c' was not declared in this scope
    6 |   cin >> A >> B >> c;
      |                    ^
a.cc:8:5: error: expected ',' or ';' before 'cout'
    8 |     cout << A << b << C << endl;
      |     ^~~~
Language: C++

nclude <iostream>

int main(void)
{
    std::string prefix, suffix, contest_name;
    std::cin >> prefix >> contest_name >> suffix;

    std::cout << prefix.at(0) <<  contest_name.at(0) << suffix.at(0) << std::endl;
    return 0;
}


Compiler output:
a.cc:1:1: error: 'nclude' does not name a type
    1 | nclude <iostream>
      | ^~~~~~
Language: C++

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

int main() {
  
  string a,s,c;
  cin >> A >> s >> C;
  cout << 'A' << s.at(0) << 'C';
  
}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:10: error: 'A' was not declared in this scope
    7 |   cin >> A >> s >> C;
      |          ^
a.cc:7:20: error: 'C' was not declared in this scope
    7 |   cin >> A >> s >> C;
      |                    ^
Language: C++

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

int main() {
  string x;
  cin >> x;
  cout << "A"+x.at(0)+"C" << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:22: error: invalid operands of types 'const char*' and 'const char [2]' to binary 'operator+'
    7 |   cout << "A"+x.at(0)+"C" << endl;
      |           ~~~~~~~~~~~^~~~
      |              |        |
      |              |        const char [2]
      |              const char*
Language: C++

string a, b, c;
cin >> a >> b >>c;
cout << a[0] << b[0] << c[0]  << endl;

Compiler output:
a.cc:1:1: error: 'string' does not name a type
    1 | string a, b, c;
      | ^~~~~~
a.cc:2:1: error: 'cin' does not name a type
    2 | cin >> a >> b >>c;
      | ^~~
a.cc:3:1: error: 'cout' does not name a type
    3 | cout << a[0] << b[0] << c[0]  << endl;
      | ^~~~
Language: C++

    #include <bits/stdc++.h>
    using namespace std;
    #define rep(i, n) for (int i = 0; i < (int)(n); i++)
     
    int main() {
      string n;
      cin >> n;
      
      cout << 'A' + n.at(0) 'C' << endl;

    }

Compiler output:
a.cc: In function 'int main()':
a.cc:9:28: error: expected ';' before 'C'
    9 |       cout << 'A' + n.at(0) 'C' << endl;
      |                            ^~~~
      |                            ;
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  string A,S,C;
  cin >> A >> S >> C;
  string a=A.at(0),c=C.at(0);
  char x = S.at(0);
  cout << a + x + c << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:16: error: conversion from '__gnu_cxx::__alloc_traits<std::allocator<char>, char>::value_type' {aka 'char'} to non-scalar type 'std::string' {aka 'std::__cxx11::basic_string<char>'} requested
    7 |   string a=A.at(0),c=C.at(0);
      |            ~~~~^~~
a.cc:7:26: error: conversion from '__gnu_cxx::__alloc_traits<std::allocator<char>, char>::value_type' {aka 'char'} to non-scalar type 'std::string' {aka 'std::__cxx11::basic_string<char>'} requested
    7 |   string a=A.at(0),c=C.at(0);
      |                      ~~~~^~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  string A,S,C;
  cin >> A >> S >> C;
  string a=A.at(0),c=C.at(0);
  char x = S.at(0);
  cout << A + x + C << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:16: error: conversion from '__gnu_cxx::__alloc_traits<std::allocator<char>, char>::value_type' {aka 'char'} to non-scalar type 'std::string' {aka 'std::__cxx11::basic_string<char>'} requested
    7 |   string a=A.at(0),c=C.at(0);
      |            ~~~~^~~
a.cc:7:26: error: conversion from '__gnu_cxx::__alloc_traits<std::allocator<char>, char>::value_type' {aka 'char'} to non-scalar type 'std::string' {aka 'std::__cxx11::basic_string<char>'} requested
    7 |   string a=A.at(0),c=C.at(0);
      |                      ~~~~^~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  string S;
  cin >> S;
  char x = S.at(1);
  cout << 'A' + x + 'C' << endl;

Compiler output:
a.cc: In function 'int main()':
a.cc:8:33: error: expected '}' at end of input
    8 |   cout << 'A' + x + 'C' << endl;
      |                                 ^
a.cc:4:12: note: to match this '{'
    4 | int main() {
      |            ^
Language: C++

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

int main() {
  string s;
  cin >> s;
  char x = s.at(i)
  cout << 'A' <<  x <<  'C' << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:17: error: 'i' was not declared in this scope
    7 |   char x = s.at(i)
      |                 ^
Language: C++

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

int main() {
  string s;
  cin >> s;
  char x = s.at(i)
  cout << 'A' + x + 'C' << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:17: error: 'i' was not declared in this scope
    7 |   char x = s.at(i)
      |                 ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  string s;
  char c;
  cin >> s;
  c = s.at(0);
  cout << A << c << C << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:11: error: 'A' was not declared in this scope
    9 |   cout << A << c << C << endl;
      |           ^
a.cc:9:21: error: 'C' was not declared in this scope
    9 |   cout << A << c << C << endl;
      |                     ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define IOS ios::sync_with_stdio(false); cin.tie(0);
#define FOR(i,s,n) for(int i = s; i < (n); i++)
#define REP(i,n) FOR(i,0,n)
#define ALL(n) (n).begin(), (n).end()
#define RALL(n) (n).rbegin(), (n).rend()
#define ATYN(n) cout << ( (n) ? "Yes":"No") << '\n';
#define CFYN(n) cout << ( (n) ? "YES":"NO") << '\n';
#define OUT(n) cout << (n) << '\n';
using ll = long long;
using ull = unsigned long long;
using pii = pair<int,int>;
using pll = pair<ll,ll>;

int main(void)
{
    IOS
    vector<string> s(3);
    REP(i,3) cin >> s[i];

    OUT("A" + s[1][0] + "C")

    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:22:23: error: invalid operands of types 'const char*' and 'const char [2]' to binary 'operator+'
   22 |     OUT("A" + s[1][0] + "C")
      |                       ^ ~~~
      |                         |
      |                         const char [2]
a.cc:10:25: note: in definition of macro 'OUT'
   10 | #define OUT(n) cout << (n) << '\n';
      |                         ^
Language: C++

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

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

cout<<"A"<<string.at(0)<<"C"<<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:18: error: expected primary-expression before '.' token
    8 | cout<<"A"<<string.at(0)<<"C"<<endl;
      |                  ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
  char a[1000],b[1000],c[1000];
  cin >> a >> b >> c;
  cout << "A" << b[0] << "C";
  return 0;
  if(a==b==c){
    cout << 1;
  }
  else if(a==b||b==c||c==a){
    cout << 2;
  }
  else{
    cout << e;
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:10: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
    8 |   if(a==b==c){
      |      ~~~~^~~
a.cc:15:13: error: 'e' was not declared in this scope
   15 |     cout << e;
      |             ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
  char a[1000],b[1000],c[1000];
  cin >> a >> b >> c;
  cout << "A" << b[0] << "C";
  return 0;
  if(a==b==c){
    cout << 1;
  }
  else if(a==b||b==c||c==a){
    cout << 2;
  }
  int e=3;
  else{
    cout << e;
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:10: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
    8 |   if(a==b==c){
      |      ~~~~^~~
a.cc:15:3: error: 'else' without a previous 'if'
   15 |   else{
      |   ^~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
string a;
int main()
{
    scanf("AtCoder %s Contest",a);
    printf("A%cC",b[0]);
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:19: error: 'b' was not declared in this scope
    7 |     printf("A%cC",b[0]);
      |                   ^
Language: Java

import java.util.*;

public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    String s = sc.next();
    String ans = "A" + String.valueOf(c.charAt(8)) + "C";
    System.out.println(ans);
  }
}

Compiler output:
Main.java:7: error: cannot find symbol
    String ans = "A" + String.valueOf(c.charAt(8)) + "C";
                                      ^
  symbol:   variable c
  location: class Main
1 error
Language: C++

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

int main() {
  string s1,s2 s3;
  cin >> s2;
  char c = s2.at(0);
  
  cout << 'A' << c << 'C' << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:5:16: error: expected initializer before 's3'
    5 |   string s1,s2 s3;
      |                ^~
a.cc:6:10: error: 's2' was not declared in this scope; did you mean 's1'?
    6 |   cin >> s2;
      |          ^~
      |          s1
Language: C++

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

int main() {
  string s;
  cin >> s;
  char c = s.at(0);
  
  cout << 'A' << c << 'C'
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:26: error: expected ';' before '}' token
    9 |   cout << 'A' << c << 'C'
      |                          ^
      |                          ;
   10 | }
      | ~
Language: C++

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

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

        cout << "A" + c.at(0) + "C" << endl;
  }

// が母音であるとき、vowel と、そうでないとき consonant


Compiler output:
a.cc: In function 'int main()':
a.cc:8:31: error: invalid operands of types 'const char*' and 'const char [2]' to binary 'operator+'
    8 |         cout << "A" + c.at(0) + "C" << endl;
      |                 ~~~~~~~~~~~~~ ^ ~~~
      |                     |           |
      |                     const char* const char [2]
Language: Java

import java.util.*;

class Main{
  
  public static void main(String args[]){
    Scanner sc = new Scanner(System.in);
    String s = sc.nextLine();
    sc.close();
    String ans = "A";
    sc = new Scanner(s);
    for(int i = 0; i < 2; ++i){
      String tmp = sc.next();
    }
    sc.close();
    ans += tmp.charAt(0) + "C";
    System.out.println(ans);
  }
}

Compiler output:
Main.java:15: error: cannot find symbol
    ans += tmp.charAt(0) + "C";
           ^
  symbol:   variable tmp
  location: class Main
1 error
Language: C++

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

int main() {
  string a, b, c;
    cin >> a >> b >> c ;
    cout << a[0] << b[0] << c[0] << endl;
    return[0]
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:12: error: expected identifier before numeric constant
    8 |     return[0]
      |            ^
a.cc: In lambda function:
a.cc:9:1: error: expected '{' before '}' token
    9 | }
      | ^
a.cc: In function 'int main()':
a.cc:8:11: error: invalid user-defined conversion from 'main()::<lambda()>' to 'int' [-fpermissive]
    8 |     return[0]
      |           ^~~
a.cc:8:11: note: candidate is: 'constexpr main()::<lambda()>::operator void (*)()() const' (near match)
    8 |     return[0]
      |           ^
a.cc:8:11: note:   no known conversion from 'void (*)()' to 'int'
a.cc:8:14: error: expected ';' before '}' token
    8 |     return[0]
      |              ^
      |              ;
    9 | }
      | ~
Language: C++

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

int main() {
  string a, b, c;
    cout << a[0] << b[0] << c[0] << endl;
    return[0]
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:12: error: expected identifier before numeric constant
    7 |     return[0]
      |            ^
a.cc: In lambda function:
a.cc:8:1: error: expected '{' before '}' token
    8 | }
      | ^
a.cc: In function 'int main()':
a.cc:7:11: error: invalid user-defined conversion from 'main()::<lambda()>' to 'int' [-fpermissive]
    7 |     return[0]
      |           ^~~
a.cc:7:11: note: candidate is: 'constexpr main()::<lambda()>::operator void (*)()() const' (near match)
    7 |     return[0]
      |           ^
a.cc:7:11: note:   no known conversion from 'void (*)()' to 'int'
a.cc:7:14: error: expected ';' before '}' token
    7 |     return[0]
      |              ^
      |              ;
    8 | }
      | ~
Language: C++

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

int main() {
  string a, b, c,
    cout << a[0] << b[0] << c[0] << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:10: error: expected initializer before '<<' token
    6 |     cout << a[0] << b[0] << c[0] << endl;
      |          ^~
Language: C++

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

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

      cout << "Atcoder" << S.at(0); << "Contest" << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:37: error: expected primary-expression before '<<' token
    8 |       cout << "Atcoder" << S.at(0); << "Contest" << endl;
      |                                     ^~
Language: C++

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

int main() {
  string S, s ;
  cin >> S;
 
   char s = S.at(0);
      cout << "Atcoder" << "s" << "Contest" << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:9: error: conflicting declaration 'char s'
    8 |    char s = S.at(0);
      |         ^
a.cc:5:13: note: previous declaration as 'std::string s'
    5 |   string S, s ;
      |             ^
Language: C++

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

int main() {
  string S, s ;
  cin >> S;
 
   char s = S.at(0)
      cout << "Atcoder" << "s" << "Contest" << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:9: error: conflicting declaration 'char s'
    8 |    char s = S.at(0)
      |         ^
a.cc:5:13: note: previous declaration as 'std::string s'
    5 |   string S, s ;
      |             ^
Language: C++

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

int main() {
  string S, s ;
  cin >> S;
 
   char s == S.at(0)
      cout << "Atcoder" << "s" << "Contest" << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:11: error: expected initializer before '==' token
    8 |    char s == S.at(0)
      |           ^~
Language: C++

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

int main() {
  string S;
  cin >> S;
 
   s == S.at(0)
      cout << "Atcoder" << "s" << "Contest" << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:4: error: 's' was not declared in this scope
    8 |    s == S.at(0)
      |    ^
Language: C++

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

int main() {
  string a, b, c;
  cin >> a >> b >> c;
  string ans = a.at(0) + b.at(0) + c.at(0);
  cout << ans << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:34: error: conversion from 'int' to non-scalar type 'std::string' {aka 'std::__cxx11::basic_string<char>'} requested
    7 |   string ans = a.at(0) + b.at(0) + c.at(0);
      |                ~~~~~~~~~~~~~~~~~~^~~~~~~~~
Language: Java

import java.util.*;
public class Main { 
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String[] strs = sc.nextLine();.split(" ");
        System.out.println("A" + strs[1].charAt(0) + "C");
    }
}

Compiler output:
Main.java:5: error: illegal start of expression
        String[] strs = sc.nextLine();.split(" ");
                                      ^
1 error
Language: C++

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

int main(){
	int N,x;
	cin >> N >> x;
	vector<int> a(N);
	int loop;
	for(loop=0;loop<N;loop++){
		cin >> a[loop];
	}
	int ans=0,tmp;
	if(a[0]>x){
		ans += a[0]-x;
		a[0]=x;
	}
	for(loop=1;loop<N;loop++){
		if(a[loop-1]+a[loop]>x){
			tmp = a[loop-1]+a[loop]-x;
			a[loop] -= tmp;
			ans += tmp;
		}
	}
	cout << ans << endl;
	return 0;
}


Compiler output:
cc1plus: error: '::main' must return 'int'
Language: C++

#include <bits/stdc++>
using namespace std;
int main()
{
  string str;
  char c;

  cin >> str;
  c = str.at(8);
  
  cout << "A" << c << 'C' << endl;
}


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

#include <bits/stdc++>
using namespace std;
int main()
{
  string str;
  char c;

  cin >> str;
  c = str.at(8);
  
  cout << "A" << c << 'C' << endl;
}

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

#pragma gcc optimize("Ofast")
#include <bits/stdc++.h>

using namespace std;
using ll = long long;

#define FOR(i, a, b) for (int i = (a); i < (b); ++i)
#define REP(i, n) FOR(i, 0, n)
#define ALL(V) (V).begin(),(V).end()
#define SORT(V) sort(ALL(V)) //小さい方からソート
#define REV(V) reverse(ALL(V)) //リバース
#define RSORT(V) SORT(V);REV(V) //大きい方からソート
#define NPN(V) next_permutation(ALL(V)) //順列
#define pb(n) push_back(n)
#define endl '\n'
#define Endl '\n'
#define DUMP(x)  cout << #x << " = " << (x) << endl
#define YES(n) cout << ((n) ? "YES" : "NO"  ) << endl
#define Yes(n) cout << ((n) ? "Yes" : "No"  ) << endl
#define Yay(n) cout << ((n) ? "Yay!": ":(") << endl
#define RAPID cin.tie(0);ios::sync_with_stdio(false)
#define IN(n) cin >> n
#define IN2(a,b) cin >> a >> b
#define IN3(a,b,c) cin >> a >> b >> c 
#define IN4(a,b,c,d) cin >> a >> b >> c >> d
#define VIN(V) for(int i = 0; i < (V).size(); i++) {cin >> (V).at(i);}
#define OUT(n) cout << n << endl
#define VOUT(V) REP(i, (V).size()) {cout << (V)[i] << endl;}
#define VOUT2(V) REP(i, (V).size()) {cout << (V)[i] << " ";} cout<<endl;

// 型マクロ定義
#define int long long
#define P pair<ll,ll>
#define Vi vector<ll>
#define Vd vector<double>
#define Vs vector<string>
#define Vc vector<char>
#define M map<ll,ll>
#define S set<ll>
#define PQ priority_queue<ll>
#define PQG priority_queue<ll,V,greater<ll>
//

const int MOD = 1000000007;
const int INF = 1061109567;
const double EPS = 1e-10;
const double PI  = acos(-1.0);

int gcd(int a,int b){return b?gcd(b,a%b):a;} //最小公倍数
string toStrUp(string str){char diff = 'A'-'a';REP(i,str.size()) str[i] += diff;return str;}
string gCh(string str, int key){return str.substr(key,1);}

signed main() {
  RAPID;
  // デフォルト変数定義
  int n,m,a,b,c,d,x,y,z;
  string s,t;
  //

  // ここから
  IN3(x,y,z);
  OUT("A"+gCh(y,0)+"C");
}

Compiler output:
a.cc: In function 'int main()':
a.cc:62:15: error: could not convert 'y' from 'long long int' to 'std::string' {aka 'std::__cxx11::basic_string<char>'}
   62 |   OUT("A"+gCh(y,0)+"C");
      |               ^
      |               |
      |               long long int
a.cc:27:24: note: in definition of macro 'OUT'
   27 | #define OUT(n) cout << n << endl
      |                        ^
Language: Java

import java.util.*;

class Main{
	public static void main(String[] args){
      	Scanner sc = new Scanner(System.in);
      
      	String a = sc.next().substring(0,1);
      	String s = sc.next().substring(0,1);
     	String c = sc.next().substring(0,1);
      
      	System.out.println(a + x + c);
    }
}

Compiler output:
Main.java:11: error: cannot find symbol
      	System.out.println(a + x + c);
      	                       ^
  symbol:   variable x
  location: class Main
1 error
Language: C++

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

int main () {

    string a, b, c;
    cin >> a >> b >> c;
    cout << "A" << b.t(0) << "C" << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:22: error: 'std::string' {aka 'class std::__cxx11::basic_string<char>'} has no member named 't'; did you mean 'at'?
    8 |     cout << "A" << b.t(0) << "C" << endl;
      |                      ^
      |                      at
Language: C++

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

int main() {

	int a,b,c;
	
	cin >> a>>b>>c;
	
	cout<<a.at(0)<<b.at(0)<<c.at(0)<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:17: error: request for member 'at' in 'a', which is of non-class type 'int'
   10 |         cout<<a.at(0)<<b.at(0)<<c.at(0)<<endl;
      |                 ^~
a.cc:10:26: error: request for member 'at' in 'b', which is of non-class type 'int'
   10 |         cout<<a.at(0)<<b.at(0)<<c.at(0)<<endl;
      |                          ^~
a.cc:10:35: error: request for member 'at' in 'c', which is of non-class type 'int'
   10 |         cout<<a.at(0)<<b.at(0)<<c.at(0)<<endl;
      |                                   ^~
Language: C

#include <stdio.h>
int main(void){
	char Su[120],bin[255];
	scanf("&s%s&s",Su[],Su[],bin[]);
	printf("A%sC",Su[8]);
	return 0;
}	

Compiler output:
main.c: In function 'main':
main.c:4:27: error: expected expression before ']' token
    4 |         scanf("&s%s&s",Su[],Su[],bin[]);
      |                           ^
Language: C

#include<stdio.h>
int main(void){
  int a,b,x,i;
  scanf("%d %d %d",&a,&b,&x);
  i = (b - a) / x
  printf("%d",i);
  return 0;
}


Compiler output:
main.c: In function 'main':
main.c:5:18: error: expected ';' before 'printf'
    5 |   i = (b - a) / x
      |                  ^
      |                  ;
    6 |   printf("%d",i);
      |   ~~~~~~
Language: C++

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

int main()
{
  	string a, b, c;
  	cin>>a>>b>>>c;
  	cout<<a[0]<<b[0]<<c[0]<<"\n";
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:20: error: expected primary-expression before '>' token
    7 |         cin>>a>>b>>>c;
      |                    ^
Language: C++

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

int main(){
string a,s;
int b;
cin >> a ;
for(int i = 0;i < i.size();i++){
if (b){
 s=a.at(i);
 break;
}
if(a.at(i) == ' ')
b=1;
}
cout << "A" << s << "C" << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:21: error: request for member 'size' in 'i', which is of non-class type 'int'
    8 | for(int i = 0;i < i.size();i++){
      |                     ^~~~
Language: C++

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

int main(){
string >>a>>b>>c>>;
cin>>a>>b>>c>>;
cout >>a[0]>>b[0]>>c[0]>>endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:5:8: error: expected unqualified-id before '>>' token
    5 | string >>a>>b>>c>>;
      |        ^~
a.cc:6:6: error: 'a' was not declared in this scope
    6 | cin>>a>>b>>c>>;
      |      ^
a.cc:6:9: error: 'b' was not declared in this scope
    6 | cin>>a>>b>>c>>;
      |         ^
a.cc:6:12: error: 'c' was not declared in this scope
    6 | cin>>a>>b>>c>>;
      |            ^
a.cc:6:15: error: expected primary-expression before ';' token
    6 | cin>>a>>b>>c>>;
      |               ^
Language: C++

#include<iostream>
using namespace std;

int main(){
	string S;
	char c;

	cin >> S;
	/*for('A'>S[0] || 'Z'<S[0]){
		cin >>S;
		if('A'<S[0] && 'Z'>S[0])break;
	}
	*/
	cout <<"AtCoder "<< S << " Contest"<<endl;
	
	c = S.at(0);

	cout <<'A' <<  <<'C' <<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:18:24: error: expected primary-expression before '<<' token
   18 |         cout <<'A' <<  <<'C' <<endl;
      |                        ^~
Language: C++

#include<iostream>
using namespace std;

int main(){
	string S;

	for('A'>S[0] || 'Z'<S[0]){
		cin >>S;
		if('A'<S[0] && 'Z'>S[0])break;
	}
	
	cout <<"AtCoder "<< S << " Contest"<<endl;

	cout <<'A' << S.at(0) <<'C' <<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:33: error: expected ';' before ')' token
    7 |         for('A'>S[0] || 'Z'<S[0]){
      |                                 ^
      |                                 ;
a.cc:14:43: error: expected ')' before ';' token
   14 |         cout <<'A' << S.at(0) <<'C' <<endl;
      |                                           ^
      |                                           )
a.cc:7:12: note: to match this '('
    7 |         for('A'>S[0] || 'Z'<S[0]){
      |            ^
Language: C++

#include<iostream>
using namespace std;

int main(){
	string S

	for('A'>S[0] || 'Z'<S[0]){
		cin >>s2;
		if('A'<S[0] && 'Z'>S[0])break;
	}
	
	cout <<"AtCoder %s Contest",S <<endl;

	cout <<"A%cC",S.at(0) <<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:9: error: expected initializer before 'for'
    7 |         for('A'>S[0] || 'Z'<S[0]){
      |         ^~~
a.cc:12:37: error: 'S' was not declared in this scope
   12 |         cout <<"AtCoder %s Contest",S <<endl;
      |                                     ^
Language: C++

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

int main() {

  string a, b, c, x;
  cin >> a >> b >> c;
  x = "aaa"
  x.at(0) = a.at(0);
  x.at(1) = b.at(0);
  x.at(2) = c.at(0);
  cout << x << endl;

}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:12: error: expected ';' before 'x'
    8 |   x = "aaa"
      |            ^
      |            ;
    9 |   x.at(0) = a.at(0);
      |   ~
Language: C++

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

int main() {

  string a, b, c;
  char x, y, z;
  cin >> a >> b >> c;
  x = a.at(0);
  y = b.at(0);
  z = c.at
  cout << x + y + z << endl;

}


Compiler output:
a.cc: In function 'int main()':
a.cc:11:9: error: cannot resolve overloaded function 'at' based on conversion to type 'char'
   11 |   z = c.at
      |         ^~
Language: C++

#include <bits/stdc++.h>

#define rep(i,n) for(int i=0;i<(n);i++)

using namespace std;

int main(){
	char c; scanf("%*s %c",&d);
	printf("A%cC\n",c);
	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:33: error: 'd' was not declared in this scope
    8 |         char c; scanf("%*s %c",&d);
      |                                 ^
Language: C++

#includd<bits/stdc++.h>
using namespace std;
int main(){
  string r,s,t;
  cin >> r >> s >> t;
  cout >> 'A' >> s.at(0) >> 'C' >> endl;
}

Compiler output:
a.cc:1:2: error: invalid preprocessing directive #includd; did you mean #include?
    1 | #includd<bits/stdc++.h>
      |  ^~~~~~~
      |  include
a.cc: In function 'int main()':
a.cc:4:3: error: 'string' was not declared in this scope
    4 |   string r,s,t;
      |   ^~~~~~
a.cc:1:1: note: 'std::string' is defined in header '<string>'; this is probably fixable by adding '#include <string>'
  +++ |+#include <string>
    1 | #includd<bits/stdc++.h>
a.cc:5:3: error: 'cin' was not declared in this scope
    5 |   cin >> r >> s >> t;
      |   ^~~
a.cc:1:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
  +++ |+#include <iostream>
    1 | #includd<bits/stdc++.h>
a.cc:5:10: error: 'r' was not declared in this scope
    5 |   cin >> r >> s >> t;
      |          ^
a.cc:5:15: error: 's' was not declared in this scope
    5 |   cin >> r >> s >> t;
      |               ^
a.cc:5:20: error: 't' was not declared in this scope
    5 |   cin >> r >> s >> t;
      |                    ^
a.cc:6:3: error: 'cout' was not declared in this scope
    6 |   cout >> 'A' >> s.at(0) >> 'C' >> endl;
      |   ^~~~
a.cc:6:3: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:6:36: error: 'endl' was not declared in this scope
    6 |   cout >> 'A' >> s.at(0) >> 'C' >> endl;
      |                                    ^~~~
a.cc:1:1: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
  +++ |+#include <ostream>
    1 | #includd<bits/stdc++.h>
Language: C++

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

int main() {
  string S;
  cin >> S;
  cout << "A" + S.at(8) + "C" << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:25: error: invalid operands of types 'const char*' and 'const char [2]' to binary 'operator+'
    7 |   cout << "A" + S.at(8) + "C" << endl;
      |           ~~~~~~~~~~~~~ ^ ~~~
      |               |           |
      |               const char* const char [2]
Language: C++

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

int main() {
  string S;
  cin >> S;
  cout << "A" + S.at(8) + C << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:27: error: 'C' was not declared in this scope
    7 |   cout << "A" + S.at(8) + C << endl;
      |                           ^
Language: C++

#include"bits/stdc++.h"
#include<boost/multi_array.hpp>
#include<boost/optional.hpp>
#include<boost/range/irange.hpp>
#include<boost/range/algorithm.hpp>
#include<boost/range/adaptors.hpp>
using namespace std;
namespace adaptor = boost::adaptors;

#define rep(i,n) for(int (i)=0;(i)<(n);(i)++)
#define rep3(i,m,n) for(int (i)=m;(i)<=(n);(i)++)
#define rep3rev(i,m,n) for(int (i)=m;(i)>=(n);(i)--)
typedef long long ll;

void Main(){
 string s1,s2,s3;
   cin >> s1 >>s2 >>;s3
   
  cout << "A" << s2[0] << "C" << endl;
 return;
 }
  
int main(){
 cin.tie(nullptr);
 ios_base::sync_with_stdio(false);
 cout << fixed << setprecision(15);
 Main();
 return 0;
 }


Compiler output:
a.cc:2:9: fatal error: boost/multi_array.hpp: No such file or directory
    2 | #include<boost/multi_array.hpp>
      |         ^~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  string a, b, c;
  cin >> a >> b >> c;
  cout << a.at(0) + b.at(0) + c.at(0) << endl
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:46: error: expected ';' before '}' token
    7 |   cout << a.at(0) + b.at(0) + c.at(0) << endl
      |                                              ^
      |                                              ;
    8 | }
      | ~
Language: C++

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

int main() {
  string ;

  char c = str.at(0);
  cout << str + c << endl; // HelloH
}


Compiler output:
a.cc: In function 'int main()':
a.cc:5:3: error: declaration does not declare anything [-fpermissive]
    5 |   string ;
      |   ^~~~~~
a.cc:7:12: error: 'str' was not declared in this scope; did you mean 'std'?
    7 |   char c = str.at(0);
      |            ^~~
      |            std
Language: C++

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

int main() {
  string a,x,c;
  cin >> a >> x >> c;
 
  cout << ‘A’ + x.at(0) + ‘C’ << endl;
  
}


Compiler output:
a.cc:8:11: error: extended character ‘ is not valid in an identifier
    8 |   cout << ‘A’ + x.at(0) + ‘C’ << endl;
      |           ^
a.cc:8:11: error: extended character ’ is not valid in an identifier
a.cc:8:27: error: extended character ‘ is not valid in an identifier
    8 |   cout << ‘A’ + x.at(0) + ‘C’ << endl;
      |                           ^
a.cc:8:27: error: extended character ’ is not valid in an identifier
a.cc: In function 'int main()':
a.cc:8:11: error: '\U00002018A\U00002019' was not declared in this scope
    8 |   cout << ‘A’ + x.at(0) + ‘C’ << endl;
      |           ^~~
a.cc:8:27: error: '\U00002018C\U00002019' was not declared in this scope
    8 |   cout << ‘A’ + x.at(0) + ‘C’ << endl;
      |                           ^~~
Language: C++

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

int main(){
string S;
cin >> S>> S;
cout << “A“ << S.at(0)<< “C”<< endl;
}


Compiler output:
a.cc:7:9: error: extended character “ is not valid in an identifier
    7 | cout << “A“ << S.at(0)<< “C”<< endl;
      |         ^
a.cc:7:9: error: extended character “ is not valid in an identifier
a.cc:7:26: error: extended character “ is not valid in an identifier
    7 | cout << “A“ << S.at(0)<< “C”<< endl;
      |                          ^
a.cc:7:26: error: extended character ” is not valid in an identifier
a.cc: In function 'int main()':
a.cc:7:9: error: '\U0000201cA\U0000201c' was not declared in this scope
    7 | cout << “A“ << S.at(0)<< “C”<< endl;
      |         ^~~
a.cc:7:26: error: '\U0000201cC\U0000201d' was not declared in this scope
    7 | cout << “A“ << S.at(0)<< “C”<< endl;
      |                          ^~~
Language: C++

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

int main(){
string s;
cin >> s>> s;
cout << “A“ << s.at(0)<< “C”<< endl;
}


Compiler output:
a.cc:7:9: error: extended character “ is not valid in an identifier
    7 | cout << “A“ << s.at(0)<< “C”<< endl;
      |         ^
a.cc:7:9: error: extended character “ is not valid in an identifier
a.cc:7:26: error: extended character “ is not valid in an identifier
    7 | cout << “A“ << s.at(0)<< “C”<< endl;
      |                          ^
a.cc:7:26: error: extended character ” is not valid in an identifier
a.cc: In function 'int main()':
a.cc:7:9: error: '\U0000201cA\U0000201c' was not declared in this scope
    7 | cout << “A“ << s.at(0)<< “C”<< endl;
      |         ^~~
a.cc:7:26: error: '\U0000201cC\U0000201d' was not declared in this scope
    7 | cout << “A“ << s.at(0)<< “C”<< endl;
      |                          ^~~
Language: C++

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

int main(){
string s;
cin >> s>> s;
cout << “A“ << s.at(0)<< “ C”<< endl;
}


Compiler output:
a.cc:7:9: error: extended character “ is not valid in an identifier
    7 | cout << “A“ << s.at(0)<< “ C”<< endl;
      |         ^
a.cc:7:9: error: extended character “ is not valid in an identifier
a.cc:7:26: error: extended character “ is not valid in an identifier
    7 | cout << “A“ << s.at(0)<< “ C”<< endl;
      |                          ^
a.cc:7:28: error: extended character ” is not valid in an identifier
    7 | cout << “A“ << s.at(0)<< “ C”<< endl;
      |                            ^
a.cc: In function 'int main()':
a.cc:7:9: error: '\U0000201cA\U0000201c' was not declared in this scope
    7 | cout << “A“ << s.at(0)<< “ C”<< endl;
      |         ^~~
a.cc:7:26: error: '\U0000201c' was not declared in this scope
    7 | cout << “A“ << s.at(0)<< “ C”<< endl;
      |                          ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  string a;
  char s;
  cin >> a >> s;

  cout << A << s << C;
}
  

Compiler output:
a.cc: In function 'int main()':
a.cc:9:11: error: 'A' was not declared in this scope
    9 |   cout << A << s << C;
      |           ^
a.cc:9:21: error: 'C' was not declared in this scope
    9 |   cout << A << s << C;
      |                     ^
Language: Java

import java.util.*;

public class Main{
  public static void main(String[] args){
    Scanner sc=new Scanner(System.in);
    String s=sc.next();
    char[] c=s.tocharArray();
    System.out.println("A"+c[9]+"C");
  }
}

Compiler output:
Main.java:7: error: cannot find symbol
    char[] c=s.tocharArray();
              ^
  symbol:   method tocharArray()
  location: variable s of type String
1 error
Language: Java

import java.util.*;

public class Main{
  public static void main(String[] args){
    Scanner sc=new Scanner(System.in);
    String[] s=sc.next();
    char[] c=s.tocharArray();
    System.out.println("A"+c[9]+"C");
  }
}

Compiler output:
Main.java:6: error: incompatible types: String cannot be converted to String[]
    String[] s=sc.next();
                      ^
Main.java:7: error: cannot find symbol
    char[] c=s.tocharArray();
              ^
  symbol:   method tocharArray()
  location: variable s of type String[]
2 errors
Language: Java

import java.util.*;

public class Main{
  public static void main(String[] args){
    Scanner sc=new Scanner(System.in);
    String[] s=sc.next().split(" ");
    char[] c=s[1].tocharArray();
    System.out.println("A"+c[1]+"C");
  }
}

Compiler output:
Main.java:7: error: cannot find symbol
    char[] c=s[1].tocharArray();
                 ^
  symbol:   method tocharArray()
  location: class String
1 error
Language: C++

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

int main() {
string a,b,c;
cin>>a>>b>>c;

cout<<a.at(0)<<b.at(0)<<c.at(0)<<
}



Compiler output:
a.cc: In function 'int main()':
a.cc:9:1: error: expected primary-expression before '}' token
    9 | }
      | ^
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().split(" ");
    s[1]=s[1].replaceAll("a-z","A-Z");
    char[] answer={s[0].charAt(0),s[1].charAt(1),s.charAt(2)};
    String ans=String.valueOf(answer);
    System.out.println(ans);
  }
}

Compiler output:
Main.java:8: error: cannot find symbol
    char[] answer={s[0].charAt(0),s[1].charAt(1),s.charAt(2)};
                                                  ^
  symbol:   method charAt(int)
  location: variable s of type String[]
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().split(" ");
    s[1]=s[1].replaceAll("a-z","A-Z");
    String ans=s[0].charAt(0)+s[1].charAt(1)+s.charAt(2);
    System.out.println(ans);
  }
}

Compiler output:
Main.java:8: error: cannot find symbol
    String ans=s[0].charAt(0)+s[1].charAt(1)+s.charAt(2);
                                              ^
  symbol:   method charAt(int)
  location: variable s of type String[]
1 error
Language: C++

#include<cstdio>
#include<iostream>

using namespace std;

long long a[100005];

int main()
{
    long long n,x,t;
    while(~scanf("%lld%lld",&n,&x))
    {
        long long sum = 0;
        a[0] = 0;

        for(int i = 1; i <= n; i++)
        {
            scanf("%lld",&a[i]);
            if(a[i] + a[i-1] > x)
            {
                t = a[i] + a[i-1] - x;    / / the number of the difference from the previous value
                sum += t;  //Statistics to the sum
                a[i] -= t;   / / Change the original value, so that the next number is judged
            }
        }
        printf("%lld\n",sum);

    }
    return 0;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:21:43: error: expected primary-expression before '/' token
   21 |                 t = a[i] + a[i-1] - x;    / / the number of the difference from the previous value
      |                                           ^
a.cc:21:45: error: expected primary-expression before '/' token
   21 |                 t = a[i] + a[i-1] - x;    / / the number of the difference from the previous value
      |                                             ^
a.cc:21:47: error: 'the' was not declared in this scope
   21 |                 t = a[i] + a[i-1] - x;    / / the number of the difference from the previous value
      |                                               ^~~
a.cc:23:30: error: expected primary-expression before '/' token
   23 |                 a[i] -= t;   / / Change the original value, so that the next number is judged
      |                              ^
a.cc:23:32: error: expected primary-expression before '/' token
   23 |                 a[i] -= t;   / / Change the original value, so that the next number is judged
      |                                ^
a.cc:23:34: error: 'Change' was not declared in this scope
   23 |                 a[i] -= t;   / / Change the original value, so that the next number is judged
      |                                  ^~~~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
  string a,b,c;
  cin >> a >> b >> c;
  
  string ans == "";
  ans += a.at(0);
  ans += b.at(0);
  ans += c.at(0);
  
  cout << ans << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:14: error: expected initializer before '==' token
    7 |   string ans == "";
      |              ^~
a.cc:8:3: error: 'ans' was not declared in this scope; did you mean 'abs'?
    8 |   ans += a.at(0);
      |   ^~~
      |   abs
Language: C++

#include <stdio.h>
#include <string.h>
int main ()
{
	char str[101];
	gets (str);
	printf("A%cC", str[0]);
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:9: error: 'gets' was not declared in this scope; did you mean 'getw'?
    6 |         gets (str);
      |         ^~~~
      |         getw
Language: C++

#include <stdio.h>
int main ()
{
	char str[101];
	gets (str);
	printf("A%cC", str[0]);
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:9: error: 'gets' was not declared in this scope; did you mean 'getw'?
    5 |         gets (str);
      |         ^~~~
      |         getw
Language: C++

#include <stdio.h>
#include <cmath>
#include <cstring>
int main(){
	char s[135]={0};
	gets(s);
	printf("A%cC", s[8]);
	return 0;
} 

Compiler output:
a.cc: In function 'int main()':
a.cc:6:9: error: 'gets' was not declared in this scope; did you mean 'getw'?
    6 |         gets(s);
      |         ^~~~
      |         getw
Language: C++

#include <stdio.h>
#include <cmath>
int main(){
	char s[135]={0};
	gets(s);
	printf("A%cC", s[8]);
	return 0;
} 

Compiler output:
a.cc: In function 'int main()':
a.cc:5:9: error: 'gets' was not declared in this scope; did you mean 'getw'?
    5 |         gets(s);
      |         ^~~~
      |         getw
Language: C

#include <stdio.h>
#include <cmath>
int main(){
	char s[135]={0};
	gets(s);
	printf("A%cC", s[8]);
	return 0;
} 

Compiler output:
main.c:2:10: fatal error: cmath: No such file or directory
    2 | #include <cmath>
      |          ^~~~~~~
compilation terminated.
Language: C++

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


int main() {
  string s;
  string res = "A";

  getline(cin, s);

  for(uint i = 7; i < s.size(); i++) {
    if(s.at(i) >= 'A' && s.at(i) <= 'Z') {
      res += s.at(i);
      res += "C"
      break;
    }
  }
  cout << res << endl;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:14:17: error: expected ';' before 'break'
   14 |       res += "C"
      |                 ^
      |                 ;
   15 |       break;
      |       ~~~~~
Language: C++

        #include <bits/stdc++.h>
        using namespace std;
         
        int main(){
          long long int a,b,x;
          cin >> a >> b >> x;
          if((b-a+1)>x){
          long long int ans = (b-a)/x;
          if(a%x==0&&b%x==0) ans++;
          cout << ans << endl;}
          else if((b-a+1)=x) cout << 1 << endl;)
          else{if(a/x==b/x)cout << 1 << endl;
               else cout << 0 << endl;
              }
          
        }

Compiler output:
a.cc: In function 'int main()':
a.cc:11:23: error: lvalue required as left operand of assignment
   11 |           else if((b-a+1)=x) cout << 1 << endl;)
      |                   ~~~~^~~
a.cc:11:48: error: expected primary-expression before ')' token
   11 |           else if((b-a+1)=x) cout << 1 << endl;)
      |                                                ^
Language: C++

#include <stdio.h>
#include <cstring>
int main(){
    char x[]={0};
    gets(x);
    ptintf("A%sC", x[9]);
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:5:5: error: 'gets' was not declared in this scope; did you mean 'getw'?
    5 |     gets(x);
      |     ^~~~
      |     getw
a.cc:6:5: error: 'ptintf' was not declared in this scope; did you mean 'printf'?
    6 |     ptintf("A%sC", x[9]);
      |     ^~~~~~
      |     printf
Language: C++

#include<bits/stdc++.h>
using namespace std;
#define ll long long                                    // long long省略
#define pb push_back                                    // push_back省略
#define mp make_pair                                    // make_pair省略
#define fi first                                        // first省略
#define se second                                       // second省略
#define itn int                                         // int誤字保険
#define count cout                                      // cout誤字保険
#define vecotr vector                                   // vector誤字保険
#define ednl endl                                       // endl誤字保険
#define opt() cin.tie(0); ios::sync_with_stdio(false)   // 入出力速度改善

#define rep(i,l,r) for(ll i=(l);i<(r);i++)               // 範囲[l, r)で刻み1のfor文(順方向)
#define repp(i,l,r,k) for(ll i=(l);i<(r);i+=(k))         // 範囲[l, r)で刻みkのfor文(順方向)
#define rrep(i,l,r) for(ll i=(r-1);i>=(l);i--)           // 範囲[l, r)で刻み1のfor文(逆方向)
#define rrepp(i,l,r,k) for(ll i=(r-1);i>=(l);i-=(k))     // 範囲[l, r)で刻みkのfor文(逆方向)
#define all(x) (x).begin(), (x).end()                   // vectorのポインタ位置指定用
#define max(p,q)((p)>(q)?(p):(q))                       // max拡張
#define min(p,q)((p)<(q)?(p):(q))                       // min拡張
#define bit(n,m)(((n)>>(m))&1)                          // 変数nのm番目のbitを取り出す

template<class T>bool chmax(T &a, const T &b) { if (a<b) { a=b; return 1; } return 0; }
template<class T>bool chmin(T &a, const T &b) { if (b<a) { a=b; return 1; } return 0; }

int dy[]={0, 1, 0, -1};                                 // 4方向近傍
int dx[]={1, 0, -1, 0};                                 // 4方向近傍

int main(){
    stirng a,b,c;cin>>a>>b>>c;
    cout<<"A"<<b[0]<<"C"<<endl;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:30:5: error: 'stirng' was not declared in this scope
   30 |     stirng a,b,c;cin>>a>>b>>c;
      |     ^~~~~~
a.cc:30:23: error: 'a' was not declared in this scope
   30 |     stirng a,b,c;cin>>a>>b>>c;
      |                       ^
a.cc:30:26: error: 'b' was not declared in this scope; did you mean 'pb'?
   30 |     stirng a,b,c;cin>>a>>b>>c;
      |                          ^
      |                          pb
a.cc:30:29: error: 'c' was not declared in this scope
   30 |     stirng a,b,c;cin>>a>>b>>c;
      |                             ^
Language: C++

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

int main() {
  string a;
  cin >> a;
  char x;
  x = a.at(7);
  string A, C
  cout << A + x + C << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:10:3: error: expected initializer before 'cout'
   10 |   cout << A + x + C << endl;
      |   ^~~~
Language: C++

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

int main() {
  string a;
  cin >> a;
  char x;
  x = a.at(7);
  cout << A + x + C << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:11: error: 'A' was not declared in this scope
    9 |   cout << A + x + C << endl;
      |           ^
a.cc:9:19: error: 'C' was not declared in this scope
    9 |   cout << A + x + C << endl;
      |                   ^
Language: C++

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

int main() {
  string a;
  cin >> a;
  x = a.at(7);
  cout << A + x + C << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:3: error: 'x' was not declared in this scope
    7 |   x = a.at(7);
      |   ^
a.cc:8:11: error: 'A' was not declared in this scope
    8 |   cout << A + x + C << endl;
      |           ^
a.cc:8:19: error: 'C' was not declared in this scope
    8 |   cout << A + x + C << endl;
      |                   ^