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

#pragma GCC optimize("Ofast")
#pragma GCC optimize ("unroll-loops")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#include<bits/stdc++.h>
typedef long long     ll;
#define fast          ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
#define fr            first
#define sc            second
#define com(i,n)      for(int i=0;i<n;i++)
#define dom(i,n)      for(int i=1;i<=n;i++)
#define mom(i,n)      for(int i=n;i>=0;i--)
#define sortI(a,n)    sort(a,a+n)
#define sortD(a,n)    sort(a,a+n,greater<int>())
#define sortvi(a)     sort(a.begin(),a.end())
#define sortvd(a)     sort(a.begin(),a.end(),greater<int>())
#define sumall(a,x)   accumulate(a.begin(),a.end(),x)
#define pi            3.14159265358979323846264338327950
using namespace std;
map<ll,ll>mp;
int main()
{
    string s;
    cin>>s;
    char c;
    c=s[0];
    if(c<=90 && c>=65)
        cout << "A\n";
    else
        cout << "a\n";
}


Compiler output:
In file included from /usr/include/c++/14/string:43,
                 from /usr/include/c++/14/bitset:52,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:52,
                 from a.cc:4:
/usr/include/c++/14/bits/allocator.h: In destructor 'std::__cxx11::basic_string<char>::_Alloc_hider::~_Alloc_hider()':
/usr/include/c++/14/bits/allocator.h:182:7: error: inlining failed in call to 'always_inline' 'std::allocator< <template-parameter-1-1> >::~allocator() noexcept [with _Tp = char]': target specific option mismatch
  182 |       ~allocator() _GLIBCXX_NOTHROW { }
      |       ^
In file included from /usr/include/c++/14/string:54:
/usr/include/c++/14/bits/basic_string.h:186:14: note: called from here
  186 |       struct _Alloc_hider : allocator_type // TODO check __is_final
      |              ^~~~~~~~~~~~
Language: C++

#include <bits/stdc++.h> 
using namespace std; 
int main() {
 	char t; 
  cin >> t; 
  if (t.isupper())
    cout << "A"; 
  else
    cout << "a"; 
  return 0; 
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:9: error: request for member 'isupper' in 't', which is of non-class type 'char'
    6 |   if (t.isupper())
      |         ^~~~~~~
Language: C++



#include <bits/stdc++.h>

#define FAST ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL)
#define PI acos(-1.0)
#define sq(n) (n)*(n)

using namespace std;
typedef long long ll;

int main()
{
    FAST;

    char s[1];
    gets(s);
    if(s[0]>='a' && s[0]<='z')
    {
        cout<<"a"<<endl;
    }

    else
    {
        cout<<"A"<<endl;
    }


    return 0;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:17:5: error: 'gets' was not declared in this scope; did you mean 'getw'?
   17 |     gets(s);
      |     ^~~~
      |     getw
Language: Java

import java.util.Scanner;
public class onesevenoned{
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        char c = sc.next().charAt(0);

        if(c==Character.toUpperCase(c)){
            System.out.println("A");
        }else{
            System.out.println("a");
        }
        //String s=String.valueOf(char);  

        // if(Character.isUpperCase(char)){
        //     System.out.println("A");
        // }else{
        //     System.out.println("a");
        // }

        sc.close();
    }
}

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

import java.util.*;

public class solution {
	public static void main(String[] args) {
		
		Scanner sc=new Scanner(System.in);
	        String s = sc.next();
	        if(s.contains(s.toLowerCase()))
	        	System.out.println("a");
	        else
	        	System.out.println("A");
	}
}

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

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

if (alpha >= 'A' && alpha <= 'Z') 
        cout<< alpha << "\A"; 
  
    else (alpha >= 'a' && alpha <= 'z') 
    cout<< alpha << "\B"; 
              
int main() 
{ 
    char alpha; 
  
    alpha = 'A'; 
  
    check(alpha); 
  
    alpha = 'a'; 
  
    check(alpha); 
  
    return 0; 
}               


Compiler output:
a.cc:4:1: error: expected unqualified-id before 'if'
    4 | if (alpha >= 'A' && alpha <= 'Z')
      | ^~
a.cc:7:5: error: expected unqualified-id before 'else'
    7 |     else (alpha >= 'a' && alpha <= 'z')
      |     ^~~~
a.cc: In function 'int main()':
a.cc:16:5: error: 'check' was not declared in this scope
   16 |     check(alpha);
      |     ^~~~~
Language: C

#include<stdio.h>
#include<conio.h>
void main()
{
  char ch;
  printf("enter the alphabet");
  scanf("%c",&ch);
  if(ch>='a'||ch<='z')
  {printf("a");}
  elseif(ch>='A'||ch<='Z')
  {printf("A");}
}

Compiler output:
main.c:2:9: fatal error: conio.h: No such file or directory
    2 | #include<conio.h>
      |         ^~~~~~~~~
compilation terminated.
Language: Java

import java.io.*;
class prg
{
  public static void main(STring args[])throws IOException
  {
    int i;
    char ch;
    BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
    ch=(char)br.read();
    if(ch>='A' && ch<='Z')
    {
      System.out.println("A");
    }
    else if(ch>='a' && ch<='z')
    {
      System.out.println("a");
    }
  }
}

Compiler output:
Main.java:4: error: cannot find symbol
  public static void main(STring args[])throws IOException
                          ^
  symbol:   class STring
  location: class prg
1 error
Language: Java

import java.util.Scanner;

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

    	boolean a = Pattern.matches("^[A-Z]+$", x);

    	if(a = true) {
    		System.out.println(A);
    	}else {
    		System.out.println(a);
    	}

        scan.close();
    }
}

Compiler output:
Main.java:6: error: cannot find symbol
        String x = scan.nextString();
                       ^
  symbol:   method nextString()
  location: variable scan of type Scanner
Main.java:8: error: cannot find symbol
    	boolean a = Pattern.matches("^[A-Z]+$", x);
    	            ^
  symbol:   variable Pattern
  location: class Main
Main.java:11: error: cannot find symbol
    		System.out.println(A);
    		                   ^
  symbol:   variable A
  location: class Main
3 errors
Language: Java

import java.util.Scanner;

public class A {
	public static void main(String[] args) {

		Scanner scan = new Scanner(System.in);

		String chara = scan.nextLine();

		if(Character.isUpperCase(chara.charAt(0))) {
			System.out.println("A");
		}else {
			System.out.println("a");
		}
		scan.close();

	}
}


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

char c;
cin << c;

if(c >= 65 && c <= 90)
{
	cout << 'A' << "\n";
} else
{
  cout << 'a' << "\n";
}

Compiler output:
a.cc:2:1: error: 'cin' does not name a type
    2 | cin << c;
      | ^~~
a.cc:4:1: error: expected unqualified-id before 'if'
    4 | if(c >= 65 && c <= 90)
      | ^~
a.cc:7:3: error: expected unqualified-id before 'else'
    7 | } else
      |   ^~~~
Language: C++

/******************************************************************************

                              facts dont care about your feelings

*******************************************************************************/

#include <iostream>

using namespace std;

int main()
{
    string x;
    cin>>x;
    
    if(x[0].isupper()){
        cout<<"A"<<endl;
    }
    else{
        cout<<"a"<<endl;
    }

    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:16:13: error: request for member 'isupper' in 'x.std::__cxx11::basic_string<char>::operator[](0)', which is of non-class type '__gnu_cxx::__alloc_traits<std::allocator<char>, char>::value_type' {aka 'char'}
   16 |     if(x[0].isupper()){
      |             ^~~~~~~
Language: C++

int main() {
	char α;
	cin >> α;
	if (65 <= char(α) <= 90) {
		cout << "A";
	}
	else {
		cout << "a";

	}

}


Compiler output:
a.cc: In function 'int main()':
a.cc:3:9: error: 'cin' was not declared in this scope
    3 |         cin >> α;
      |         ^~~
a.cc:5:17: error: 'cout' was not declared in this scope
    5 |                 cout << "A";
      |                 ^~~~
a.cc:8:17: error: 'cout' was not declared in this scope
    8 |                 cout << "a";
      |                 ^~~~
Language: Java

class Solution{
public static void main(String[] args){
  Scanner sc = new Scanner(System.in);
  char value = sc.nextLine().toCharArray()[0];
  if(Character.isUpper(value))
    System.out.println('A');
  else
    System.out.println('a');
}
}

Compiler output:
Main.java:3: error: cannot find symbol
  Scanner sc = new Scanner(System.in);
  ^
  symbol:   class Scanner
  location: class Solution
Main.java:3: error: cannot find symbol
  Scanner sc = new Scanner(System.in);
                   ^
  symbol:   class Scanner
  location: class Solution
Main.java:5: error: cannot find symbol
  if(Character.isUpper(value))
              ^
  symbol:   method isUpper(char)
  location: class Character
3 errors
Language: Java

import java.util.*;
class s{
  public static void main(String args[]){
    Scanner obj=new Scanner(System.in);
    int t=obj.nextInt();
    while(t-->0){
      char c=obj.next.charAt(0);
      if(Character.isLowerCase(c))
        System.out.println("a");
      else
        System.out.println("A");
    }
  }
}

Compiler output:
Main.java:7: error: cannot find symbol
      char c=obj.next.charAt(0);
                ^
  symbol:   variable next
  location: variable obj of type Scanner
1 error
Language: Java

import java.util.*;
import java.lang.*;
public class TestA
{
  public static void main(String args[])
  {
    Scanner sc=new Scanner(System.in);
    String s=sc.next();
    char ch=s.charAt(0);
    if(ch>='A' && ch<='Z')
      System.out.println("A");
    else
      System.out.println("a");
  }
}

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

#include <iostream>
#include <vector>
#include <cstdlib>

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

const long long INF = 1LL << 60;

int N;
long long h[100060];
long long dp[100060];

int main () {
    char a; cin >> a;

    if((a>='a') && (a<='z')) {
        cout << 'a' endl;
    } else {
        cout <<'A' endl;
    } 

/*
    int K; cin >> K; 
    for (size_t i = 0; i < N; ++i) cin >> h[i];
    for (size_t i = 0; i < 100060; ++i) dp[i]= INF;

    dp[0]=0;


    for (size_t i = 0; i < N; i++)
    {
        for (size_t j = 1; j <= K; j++)
        {
            chmin(dp[i+j], dp[i] +abs(h[i] - h[i+j]));
            
            //if (i > 1) chmin(dp[i], dp[i -2] + abs(h[i] - h[i-2]));
        }
        
    }
    cout << dp[N-1] << endl;
    */

    return 0;

}

Compiler output:
a.cc: In function 'int main()':
a.cc:19:20: error: expected ';' before 'endl'
   19 |         cout << 'a' endl;
      |                    ^~~~~
      |                    ;
a.cc:21:19: error: expected ';' before 'endl'
   21 |         cout <<'A' endl;
      |                   ^~~~~
      |                   ;
Language: C++

char c;
cin >> c;

if(c >= 65 && c >= 90)
{
  cout << 'A' << "\n";
} else
{
  cout << 'a' << "\n";
}

Compiler output:
a.cc:2:1: error: 'cin' does not name a type
    2 | cin >> c;
      | ^~~
a.cc:4:1: error: expected unqualified-id before 'if'
    4 | if(c >= 65 && c >= 90)
      | ^~
a.cc:7:3: error: expected unqualified-id before 'else'
    7 | } else
      |   ^~~~
Language: C

#include <stdio.h>
int main()
{
	int a;
	scanf("%d",&a);
	if(a=>'a'){
		printf("a");
	}else{
		printf("A");
	}
}

Compiler output:
main.c: In function 'main':
main.c:6:14: error: expected expression before '>' token
    6 |         if(a=>'a'){
      |              ^
Language: C++

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

int main(){
  char word;
  cin >> word;
  
  if (word<91){
    cout << A << endl;
  }
  else {
    cout << a << endl;
  }
} 


Compiler output:
a.cc: In function 'int main()':
a.cc:9:13: error: 'A' was not declared in this scope
    9 |     cout << A << endl;
      |             ^
a.cc:12:13: error: 'a' was not declared in this scope
   12 |     cout << a << endl;
      |             ^
Language: C++

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

int main()
    {
       char s;
       cin >> s;

       if (isupper(s))
       {
           cout << "A" << endl;
       }
       else
       {
           cout << "a" << endl;
       }

       return 0;
}
    
a


Compiler output:
a.cc:27:1: error: 'a' does not name a type
   27 | a
      | ^
Language: C++

#include<iostream.h>
int main()
{
  char $;
  cin>>$;
  if($>=97 && $<=122)
    cout<<"a";
  else cout<<"A";
  return 0;
}

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

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


class GFG {
	public static void main (String[] args) {
	    Scanner s=new Scanner(System.in);
	    char a=s.next();
	    if(Character.isUpperCase(a))
		System.out.println('A');
	    if(Character.isUpperCase(a))
		System.out.println('A');
	}
}

Compiler output:
Main.java:1: error: <identifier> expected
import import java.io.*;
      ^
1 error
Language: Java

import java.util.Scanner;

public class alphabet {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        char c = in.nextLine().charAt(0);
        if (Character.isUpperCase(c))
            System.out.println("A");
        else
            System.out.println("a");
    }
}


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

#include<iostream>
#include<ctype>
using namespace std;
int main()
{
  char a;
  cin>>a;
  if(isupper(a)==1)
    cout<<"A";
  else
    cout<<"b";
  return 0;
}

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

#include <iostream>
#include <vector>
#include <algorithm>
#include <string>
#include <queue>
#include <cmath>

#define IOS ios::sync_with_stdio(false); cin.tie(0)

using namespace std;

int main()
{
	char c;
	cin >> c;
	if (c < 91) cout << "A";
	else cout <<"a"
}

Compiler output:
a.cc: In function 'int main()':
a.cc:17:24: error: expected ';' before '}' token
   17 |         else cout <<"a"
      |                        ^
      |                        ;
   18 | }
      | ~
Language: Java

import java.util.Scanner;


public class alphabet {

	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		
		String s = scan.next();
		
		if(!s.equals(s.toLowerCase()))
			System.out.println("A");
		else
			System.out.println("a");
				
		

	}

}


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

#include <iostream>

int main() {
    char l;
    cin >> l;
    if ((int)l > 90)
        cout << "a";
    else
        cout << "A";

    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:5: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    5 |     cin >> l;
      |     ^~~
      |     std::cin
In file included from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:7:9: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    7 |         cout << "a";
      |         ^~~~
      |         std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:9:9: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    9 |         cout << "A";
      |         ^~~~
      |         std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
Language: C++

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

int main(){
  
  string a;
  cin >> a;
  
  if( a >= A && a < a ){
    
    cout << "A" << endl;
    
  }
  
  else {
    
    cout << "a" << endl;
    
  }
  
}
    
    


Compiler output:
a.cc: In function 'int main()':
a.cc:9:12: error: 'A' was not declared in this scope
    9 |   if( a >= A && a < a ){
      |            ^
Language: C++

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

int main(){
	char alpah;
  cin >> alpha;
  
  
  vector<string> cap={"abcdefghijklmnopqrstuvwxyz"};
  vector<string> CAP={"ABCDEFGHIJKLMNOPQRSTUVWXYZ"};
  
  for(int i=0; i<26; i++){
  if(alpha==cap[i]){
    cout << 'a' << endl;
  }
  else if(alpha==CAP[i]){
    cout << 'A' << endl;
  }
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:10: error: 'alpha' was not declared in this scope; did you mean 'alpah'?
    6 |   cin >> alpha;
      |          ^~~~~
      |          alpah
Language: C++

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

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

  transform (s, tolower);
  
  cout << s << endl;

  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:11:13: error: no matching function for call to 'transform(std::string&, <unresolved overloaded function type>)'
   11 |   transform (s, tolower);
      |   ~~~~~~~~~~^~~~~~~~~~~~
In file included from /usr/include/c++/14/algorithm:61,
                 from a.cc:3:
/usr/include/c++/14/bits/stl_algo.h:4209:5: note: candidate: 'template<class _IIter, class _OIter, class _UnaryOperation> _OIter std::transform(_IIter, _IIter, _OIter, _UnaryOperation)'
 4209 |     transform(_InputIterator __first, _InputIterator __last,
      |     ^~~~~~~~~
/usr/include/c++/14/bits/stl_algo.h:4209:5: note:   candidate expects 4 arguments, 2 provided
/usr/include/c++/14/bits/stl_algo.h:4247:5: note: candidate: 'template<class _IIter1, class _IIter2, class _OIter, class _BinaryOperation> _OIter std::transform(_IIter1, _IIter1, _IIter2, _OIter, _BinaryOperation)'
 4247 |     transform(_InputIterator1 __first1, _InputIterator1 __last1,
      |     ^~~~~~~~~
/usr/include/c++/14/bits/stl_algo.h:4247:5: note:   candidate expects 5 arguments, 2 provided
In file included from /usr/include/c++/14/algorithm:86:
/usr/include/c++/14/pstl/glue_algorithm_defs.h:156:1: note: candidate: 'template<class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _UnaryOperation> __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2> std::transform(_ExecutionPolicy&&, _ForwardIterator1, _ForwardIterator1, _ForwardIterator2, _UnaryOperation)'
  156 | transform(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last, _ForwardIterator2 __result,
      | ^~~~~~~~~
/usr/include/c++/14/pstl/glue_algorithm_defs.h:156:1: note:   candidate expects 5 arguments, 2 provided
/usr/include/c++/14/pstl/glue_algorithm_defs.h:162:1: note: candidate: 'template<class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _ForwardIterator, class _BinaryOperation> __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2> std::transform(_ExecutionPolicy&&, _ForwardIterator1, _ForwardIterator1, _ForwardIterator2, _ForwardIterator, _BinaryOperation)'
  162 | transform(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2,
      | ^~~~~~~~~
/usr/include/c++/14/pstl/glue_algorithm_defs.h:162:1: note:   candidate expects 6 arguments, 2 provided
Language: C++

#inlucde <iostream>
using namespace std;
int main(){
	char a;
  cin >> a;
  cout << (a<='z')?"a":"A";
  return 0;
}


Compiler output:
a.cc:1:2: error: invalid preprocessing directive #inlucde; did you mean #include?
    1 | #inlucde <iostream>
      |  ^~~~~~~
      |  include
a.cc: In function 'int main()':
a.cc:5:3: error: 'cin' was not declared in this scope
    5 |   cin >> a;
      |   ^~~
a.cc:1:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
  +++ |+#include <iostream>
    1 | #inlucde <iostream>
a.cc:6:3: error: 'cout' was not declared in this scope
    6 |   cout << (a<='z')?"a":"A";
      |   ^~~~
a.cc:6:3: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
Language: Java

import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		// スペース区切りの整数の入力
		String syaink = sc.nextLine();
       if(Character.isUpperCase(syaink.charAt(0))){
         Syatem.out.println("A");
       }else{
         Syatem.out.println("a");
         }
}
}

Compiler output:
Main.java:8: error: package Syatem does not exist
         Syatem.out.println("A");
               ^
Main.java:10: error: package Syatem does not exist
         Syatem.out.println("a");
               ^
2 errors
Language: C++

#include <bits/stdc++.h>
#define ll long long 

using namespace std;

int main()
{
    char a;
    cin >> a;
    if(a >= 97)
    {
        cout << "a";
    }
    else
    {
        cout << "A";
    }
     
      
    }
    
    return 0;
}

Compiler output:
a.cc:22:5: error: expected unqualified-id before 'return'
   22 |     return 0;
      |     ^~~~~~
a.cc:23:1: error: expected declaration before '}' token
   23 | }
      | ^
Language: C++

include<bits/stdc++.h>
using namespace std;
int main()
{
	char c;
	cin>>c;
	if(c>='A'&&c<='Z') cout<<"A";
	else cout<<"a";
	return 0;
}

Compiler output:
a.cc:1:1: error: 'include' does not name a type
    1 | include<bits/stdc++.h>
      | ^~~~~~~
a.cc: In function 'int main()':
a.cc:6:9: error: 'cin' was not declared in this scope
    6 |         cin>>c;
      |         ^~~
a.cc:7:28: error: 'cout' was not declared in this scope
    7 |         if(c>='A'&&c<='Z') cout<<"A";
      |                            ^~~~
a.cc:8:14: error: 'cout' was not declared in this scope
    8 |         else cout<<"a";
      |              ^~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main(){
  string x;
  cin>>x;
  if (x=="a"or x=="b" or x=="c" or x=="d"or x=="e"or x=="f" orx=="g"or x=="h"or x=="i"or x=="j"or x=="k"or x=="l"or x=="m"or x=="n"or x=="o"or x=="p"or x=="q"or x=="r"or x=="s"or x=="t"or x=="u"or x=="v"or x=="w"or x=="x"or x=="y"or x=="z"){
    cout<<"a"<<endl;}
  else {cout<<"A"<<endl;}
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:10: error: unable to find string literal operator 'operator""or' with 'const char [2]', 'long unsigned int' arguments
    6 |   if (x=="a"or x=="b" or x=="c" or x=="d"or x=="e"or x=="f" orx=="g"or x=="h"or x=="i"or x=="j"or x=="k"or x=="l"or x=="m"or x=="n"or x=="o"or x=="p"or x=="q"or x=="r"or x=="s"or x=="t"or x=="u"or x=="v"or x=="w"or x=="x"or x=="y"or x=="z"){
      |          ^~~~~
a.cc:6:15: error: expected ')' before 'x'
    6 |   if (x=="a"or x=="b" or x=="c" or x=="d"or x=="e"or x=="f" orx=="g"or x=="h"or x=="i"or x=="j"or x=="k"or x=="l"or x=="m"or x=="n"or x=="o"or x=="p"or x=="q"or x=="r"or x=="s"or x=="t"or x=="u"or x=="v"or x=="w"or x=="x"or x=="y"or x=="z"){
      |      ~        ^~
      |               )
Language: C++

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

int main() {
   char c;
   cin >> c;
   if (c-97 >= 0) cout << a << endl;
   else cout << A << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:27: error: 'a' was not declared in this scope
    8 |    if (c-97 >= 0) cout << a << endl;
      |                           ^
a.cc:9:17: error: 'A' was not declared in this scope
    9 |    else cout << A << endl;
      |                 ^
Language: C++

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

int main(void){
  string a;
  cin >> a;
  
  if( isupper(a) ) cout << "A" <<"\n";
  else cout << "a" << "\n";

  return 0;
}//main


Compiler output:
a.cc: In function 'int main()':
a.cc:9:14: error: no matching function for call to 'isupper(std::string&)'
    9 |   if( isupper(a) ) cout << "A" <<"\n";
      |       ~~~~~~~^~~
In file included from /usr/include/c++/14/bits/basic_ios.h:37,
                 from /usr/include/c++/14/ios:46,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41,
                 from a.cc:1:
/usr/include/c++/14/bits/locale_facets.h:2631:5: note: candidate: 'template<class _CharT> bool std::isupper(_CharT, const locale&)'
 2631 |     isupper(_CharT __c, const locale& __loc)
      |     ^~~~~~~
/usr/include/c++/14/bits/locale_facets.h:2631:5: note:   candidate expects 2 arguments, 1 provided
In file included from /usr/include/c++/14/cctype:42,
                 from /usr/include/c++/14/bits/localefwd.h:42,
                 from /usr/include/c++/14/ios:43:
/usr/include/ctype.h:117:1: note: candidate: 'int isupper(int)'
  117 | __exctype (isupper);
      | ^~~~~~~~~
/usr/include/ctype.h:117:1: note:   no known conversion for argument 1 from 'std::string' {aka 'std::__cxx11::basic_string<char>'} to 'int'
  117 | __exctype (isupper);
      | ^~~~~~~~~
Language: Java

import java.util.*;
import java.lang.*;
import java.math.*;
import java.io.*;
class Main{
	public static void main(String[] args) {
		InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
      	char c=in.nextChar();
		if(c>=65 && c<=90)
			System.out.println('A');
		else
			System.out.println('a');
	} 
}


Compiler output:
Main.java:11: error: cannot find symbol
      	char c=in.nextChar();
      	         ^
  symbol:   method nextChar()
  location: variable in of type Scanner
1 error
Language: C++

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

int main() {
    string s;
    cin >> s;
    if( s == "A"){
        cout << "A" << endl;
    }
    else if(s == "B" ){
        cout << "A" << endl;
    }
    else if(s == "C" ){
        cout << "A" << endl;
    }  
    else if(s == "D" ){
        cout << "A" << endl;
    }     
    else if(s == "E" ){
        cout << "A" << endl;
    }   
    else if(s == "F" ){
        cout << "A" << endl;
    }   
    else if(s == "G" ){
        cout << "A" << endl;
    }   
    else if(s == "H" ){
        cout << "A" << endl;
    }   
    else if(s == "I" ){
        cout << "A" << endl;
    }   
    else if(s == "J" ){
        cout << "A" << endl;
    }   
    else if(s == "K" ){
        cout << "A" << endl;
    }   
    else if(s == "L" ){
        cout << "A" << endl;
    }   
    else if(s == "M" ){
        cout << "A" << endl;
    }   
    else if(s == "N" ){
        cout << "A" << endl;
    }   
    else if(s == "O" ){
        cout << "A" << endl;
    }   
    else if(s == "P" ){
        cout << "A" << endl;
    }   
    else if(s == "Q" ){
        cout << "A" << endl;
    }   
    else if(s == "R" ){
        cout << "A" << endl;
    }   
    else if(s == "S" ){
        cout << "A" << endl;
    }   
    else if(s == "T" ){
        cout << "A" << endl;
    }   
    else if(s == "U" ){
        cout << "A" << endl;
    }
    else if(s == "V" ){
        cout << "A" << endl;
    }   
    else if(s == "W" ){
        cout << "A" << endl;
    }   
    else if(s == "X" ){
        cout << "A" << endl;
    }   
    else if(s == "Y" ){
        cout << "A" << endl;
    }   
    else if(s == "Z" ){
        cout << "A" << endl;
    }   

    else (s == "a" ){
        cout << "a" << endl;
    }
    
}

Compiler output:
a.cc: In function 'int main()':
a.cc:86:21: error: expected ';' before '{' token
   86 |     else (s == "a" ){
      |                     ^
      |                     ;
a.cc:86:13: warning: ignoring return value of 'bool std::operator==(const __cxx11::basic_string<_CharT, _Traits, _Allocator>&, const _CharT*) [with _CharT = char; _Traits = char_traits<char>; _Alloc = allocator<char>]', declared with attribute 'nodiscard' [-Wunused-result]
   86 |     else (s == "a" ){
      |          ~~~^~~~~~~~
In file included from /usr/include/c++/14/string:54,
                 from /usr/include/c++/14/bitset:52,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:52,
                 from a.cc:1:
/usr/include/c++/14/bits/basic_string.h:3772:5: note: declared here
 3772 |     operator==(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
Language: Java

import java.util.Scanner;


public class Q6 {

	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		
		String s = scan.next();
		
		if(!s.equals(s.toLowerCase()))
			System.out.println("A");
		else
			System.out.println("a");
				
		

	}

}


Compiler output:
Main.java:4: error: class Q6 is public, should be declared in a file named Q6.java
public class Q6 {
       ^
1 error
Language: C

#pragma GCC optimize("Ofast")
#pragma GCC optimize ("unroll-loops")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#include<bits/stdc++.h>
typedef long long     ll;
#define fast          ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
#define fr            first
#define sc            second
#define com(i,n)      for(int i=0;i<n;i++)
#define dom(i,n)      for(int i=1;i<=n;i++)
#define mom(i,n)      for(int i=n;i>=0;i--)
#define sortI(a,n)    sort(a,a+n)
#define sortD(a,n)    sort(a,a+n,greater<int>())
#define sortvi(a)     sort(a.begin(),a.end())
#define sortvd(a)     sort(a.begin(),a.end(),greater<int>())
#define sumall(a,x)   accumulate(a.begin(),a.end(),x)
#define pi            3.14159265358979323846264338327950
using namespace std;
map<ll,ll>mp;
int main()
{
    string s;
    cin>>s;
    if(s[0]<96)
          cout << "A\n";
     else
          cout << "a\n";
}


Compiler output:
main.c:4:9: fatal error: bits/stdc++.h: No such file or directory
    4 | #include<bits/stdc++.h>
      |         ^~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include  <bits/stdc++.h>
using namespace std; 
int main()
{
	char a;
	if
	{
		a>=97&&a<=122;
		cout<<'a';
		return 0;
	}
	else if
	{
		a>=65&&a<=90;
		cout<<'A';
		return 0;
	}
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:9: error: expected '(' before '{' token
    7 |         {
      |         ^
      |         (
a.cc:12:9: error: 'else' without a previous 'if'
   12 |         else if
      |         ^~~~
a.cc:13:9: error: expected '(' before '{' token
   13 |         {
      |         ^
      |         (
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {

char X ;
cin >> X; 

if (X='A')cout<<"A"<<endl;
else if (X='B')cout<<"A"<<endl;
else if (X='C')cout<<"A"<<endl;
else if (X='D')cout<<"A"<<endl;
else if (X='E')cout<<"A"<<endl;
else if (X='F')cout<<"A"<<endl;
else if (X='G')cout<<"A"<<endl;
else if (X='H)cout<<"A"<<endl;
else if (X='I')cout<<"A"<<endl;
else if (X='J')cout<<"A"<<endl;
else if (X='K')cout<<"A"<<endl;
else if (X='L')cout<<"A"<<endl;
else if (X='N')cout<<"A"<<endl;
else if (X='M')cout<<"A"<<endl;
else if (X='O')cout<<"A"<<endl;
else if (X='P')cout<<"A"<<endl;
else if (X='Q')cout<<"A"<<endl;
else if (X='R')cout<<"A"<<endl;
else if (X='S')cout<<"A"<<endl;
else if (X='T')cout<<"A"<<endl;
else if (X='V')cout<<"A"<<endl;
else if (X='W')cout<<"A"<<endl;
else if (X='X')cout<<"A"<<endl;
else if (X='Y')cout<<"A"<<endl;
else if (X='Z')cout<<"A"<<endl;

else cout<<"a"<<endl;

}

Compiler output:
a.cc:16:12: warning: missing terminating ' character
   16 | else if (X='H)cout<<"A"<<endl;
      |            ^
a.cc:16:12: error: missing terminating ' character
   16 | else if (X='H)cout<<"A"<<endl;
      |            ^~~~~~~~~~~~~~~~~~~
a.cc: In function 'int main()':
a.cc:17:1: error: expected primary-expression before 'else'
   17 | else if (X='I')cout<<"A"<<endl;
      | ^~~~
a.cc:18:1: error: expected primary-expression before 'else'
   18 | else if (X='J')cout<<"A"<<endl;
      | ^~~~
a.cc:17:32: error: expected ')' before 'else'
   17 | else if (X='I')cout<<"A"<<endl;
      |                                ^
      |                                )
   18 | else if (X='J')cout<<"A"<<endl;
      | ~~~~                            
a.cc:16:9: note: to match this '('
   16 | else if (X='H)cout<<"A"<<endl;
      |         ^
Language: Java

import java.util.*;

public static void main(String[] args){
 	Scanner sc = new Scanner(System.in);
  	String str = sc.next();
  	char c = str.charAt(0);
  	if(Character.isUpperCase(c)){
    	System.out.println("A");
    }else{
      System.out.println("a");
    }
}

Compiler output:
Main.java:3: error: unnamed classes are a preview feature and are disabled by default.
public static void main(String[] args){
              ^
  (use --enable-preview to enable unnamed classes)
1 error
Language: Java

import java.math.BigDecimal;
import java.time.LocalDate;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Scanner;
import java.util.concurrent.CountDownLatch;

public class Test {

	public static void main(String args[]) {

		Scanner scanner = new Scanner(System.in);

		String aString =  scanner.next();
		
		
		if(aString.charAt(0) >= 97 ) {
			System.out.println("a");
		} else {
			System.out.println("A");
		}}
		
		
	}

Compiler output:
Main.java:12: error: class Test is public, should be declared in a file named Test.java
public class Test {
       ^
1 error
Language: C++

int main() {
	char 'α';
	cin >> α;
	if (65 <= α <= 90) {
		cout << "A";
	}
	else {
		cout << "a";

	}

}


Compiler output:
a.cc:2:14: warning: multi-character character constant [-Wmultichar]
    2 |         char 'α';
      |              ^~~
a.cc: In function 'int main()':
a.cc:2:14: error: expected unqualified-id before '\xceb1'
a.cc:3:9: error: 'cin' was not declared in this scope
    3 |         cin >> α;
      |         ^~~
a.cc:3:16: error: '\U000003b1' was not declared in this scope
    3 |         cin >> α;
      |                ^
a.cc:5:17: error: 'cout' was not declared in this scope
    5 |                 cout << "A";
      |                 ^~~~
a.cc:8:17: error: 'cout' was not declared in this scope
    8 |                 cout << "a";
      |                 ^~~~
Language: Java

import java.util.Scanner;

public class A {
	public static void main(String[] args) {

		Scanner scan = new Scanner(System.in);

		String chara = scan.nextLine();

		if(Character.isUpperCase(chara.charAt(0))) {
			System.out.println("A");
		}else {
			System.out.println("a");
		}

	}
}


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

import java.util.*;

public class Puzzles {

	public static Scanner scan = new Scanner(System.in);
	public static void Main(String[] args) {
      
 	String a = scan.next();
	      if(a.charAt(0) > 96 && a.charAt(0) < 123) 
	        System.out.println('a');
	      if(a.charAt(0) > 64 && a.charAt(0) < 91)
	        System.out.println('A');
    }
}

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

#include <bits/stdc++.h>
#define ll long long 

using namespace std;

int main()
{
    char a;
    cin >> a;
    if((int)a >= 97)
    {
        cout << "A";
    }
    else
    {
        cout << "a";
    }
     
      
    }
    
    return 0;
}

Compiler output:
a.cc:22:5: error: expected unqualified-id before 'return'
   22 |     return 0;
      |     ^~~~~~
a.cc:23:1: error: expected declaration before '}' token
   23 | }
      | ^
Language: Java

import java.util.*;
class s{
  public static void main(String args[]){
    Scanner obj=new Scanner(System.in);
    int t=obj.nextInt();
    while(t-->0){
      String s=obj.nextLine();
      if(isLowerCase(s))
        System.out.println("a");
      else
        System.out.println("A");
    }
  }
}

Compiler output:
Main.java:8: error: cannot find symbol
      if(isLowerCase(s))
         ^
  symbol:   method isLowerCase(String)
  location: class s
1 error
Language: C++

#pragma GCC optimize("Ofast")
#pragma GCC optimize ("unroll-loops")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#include<bits/stdc++.h>
typedef long long     ll;
#define fast          ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
#define fr            first
#define sc            second
#define com(i,n)      for(int i=0;i<n;i++)
#define dom(i,n)      for(int i=1;i<=n;i++)
#define mom(i,n)      for(int i=n;i>=0;i--)
#define sortI(a,n)    sort(a,a+n)
#define sortD(a,n)    sort(a,a+n,greater<int>())
#define sortvi(a)     sort(a.begin(),a.end())
#define sortvd(a)     sort(a.begin(),a.end(),greater<int>())
#define sumall(a,x)   accumulate(a.begin(),a.end(),x)
#define pi            3.14159265358979323846264338327950
using namespace std;
map<ll,ll>mp;
int main()
{
    char s;
    cin>>s;
    if(s<96)
          cout << "A\n";
     else
          cout << "a\n";
}


Compiler output:
In file included from /usr/include/c++/14/string:43,
                 from /usr/include/c++/14/bitset:52,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:52,
                 from a.cc:4:
/usr/include/c++/14/bits/allocator.h: In destructor 'std::_Rb_tree<long long int, std::pair<const long long int, long long int>, std::_Select1st<std::pair<const long long int, long long int> >, std::less<long long int>, std::allocator<std::pair<const long long int, long long int> > >::_Rb_tree_impl<std::less<long long int>, true>::~_Rb_tree_impl()':
/usr/include/c++/14/bits/allocator.h:182:7: error: inlining failed in call to 'always_inline' 'std::allocator< <template-parameter-1-1> >::~allocator() noexcept [with _Tp = std::_Rb_tree_node<std::pair<const long long int, long long int> >]': target specific option mismatch
  182 |       ~allocator() _GLIBCXX_NOTHROW { }
      |       ^
In file included from /usr/include/c++/14/map:62,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:152:
/usr/include/c++/14/bits/stl_tree.h:658:16: note: called from here
  658 |         struct _Rb_tree_impl
      |                ^~~~~~~~~~~~~
Language: C++

#include <bits/stdc++.h>

using namespace std;

int main(){
string s;
  cin >> s;
  if(isupper(s))
    puts("A");
  else
    puts("a");

return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:13: error: no matching function for call to 'isupper(std::string&)'
    8 |   if(isupper(s))
      |      ~~~~~~~^~~
In file included from /usr/include/c++/14/bits/basic_ios.h:37,
                 from /usr/include/c++/14/ios:46,
                 from /usr/include/c++/14/istream:40,
                 from /usr/include/c++/14/sstream:40,
                 from /usr/include/c++/14/complex:45,
                 from /usr/include/c++/14/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:127,
                 from a.cc:1:
/usr/include/c++/14/bits/locale_facets.h:2631:5: note: candidate: 'template<class _CharT> bool std::isupper(_CharT, const locale&)'
 2631 |     isupper(_CharT __c, const locale& __loc)
      |     ^~~~~~~
/usr/include/c++/14/bits/locale_facets.h:2631:5: note:   candidate expects 2 arguments, 1 provided
In file included from /usr/include/c++/14/cctype:42,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:35:
/usr/include/ctype.h:117:1: note: candidate: 'int isupper(int)'
  117 | __exctype (isupper);
      | ^~~~~~~~~
/usr/include/ctype.h:117:1: note:   no known conversion for argument 1 from 'std::string' {aka 'std::__cxx11::basic_string<char>'} to 'int'
  117 | __exctype (isupper);
      | ^~~~~~~~~
Language: Java

import java.util.*;
public class Solution {
	public static void main(String[] args) {
    	Scanner in = new Scanner(System.in);
      	char c = in.nextLine().charAt(0);
      	if(Character.isUpperCase(c))
          System.out.println("A");
      	else
          System.out.println("a");
    }
}

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

package atcoder.beginner?_171;

import java.io.*;
import java.util.StringTokenizer;

public class Main {

    public static void main (String[] args) throws Exception {

        String s = "AZaz";

//        br = new BufferedReader(new StringReader(s));
        br = new BufferedReader(new InputStreamReader(System.in));
        bw = new BufferedWriter(new OutputStreamWriter(System.out));

        rl(); char[] A=nca();
        for(int i=0; i<A.length; ++i) {
            if(A[i]>=65 && A[i]<=90) {
                A[i]='A';
            } else {
                A[i]='a';
            }
        }


        bw.write(A);
        bw.newLine();
        bw.flush();

    }

    static BufferedReader br;
    static BufferedWriter bw;
    static StringTokenizer st;
    static void rl() throws Exception{
        st = new StringTokenizer(br.readLine());
    }
    static long nlo(){
        return Long.parseLong(st.nextToken());
    }
    static int nin(){
        return Integer.parseInt(st.nextToken());
    }
    /*private static void te(){
      }*/
    static double ndo(){
        return Double.parseDouble(st.nextToken());
    }
    static char[] nca(){
        return st.nextToken().toCharArray();
    }
    static String nstr(){
        return st.nextToken();
    }
}

Compiler output:
Main.java:1: error: ';' expected
package atcoder.beginner?_171;
                        ^
1 error
Language: Java

import java.util.*; 

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

		String a = sc.next();
		Char s = a;
		if(s >= 'a' && s <= 'z'){
			System.out.println("a");
		 } else {
			 System.out.println("A");
		 }

		}
	  }
	


Compiler output:
Main.java:8: error: cannot find symbol
		Char s = a;
		^
  symbol:   class Char
  location: class Main
1 error
Language: C++

#include <bits/stdc++.h>
#define ll long long 

using namespace std;

int main()
{
    char a;
    cin >> a;
    if(a >= 97)
    {
        cout << "A";
    }
    else
    {
        cout << "a";
    }
     
      
    }
    
    return 0;
}

Compiler output:
a.cc:22:5: error: expected unqualified-id before 'return'
   22 |     return 0;
      |     ^~~~~~
a.cc:23:1: error: expected declaration before '}' token
   23 | }
      | ^
Language: C++

#include<bits/stdc++.h>
int main()
{
    string s;
    cin>>s;
    if(s[0]<96)
          cout << "A\n";
     else
          cout << "a\n";
}


Compiler output:
a.cc: In function 'int main()':
a.cc:4:5: error: 'string' was not declared in this scope
    4 |     string s;
      |     ^~~~~~
a.cc:4:5: note: suggested alternatives:
In file included from /usr/include/c++/14/string:41,
                 from /usr/include/c++/14/bitset:52,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:52,
                 from a.cc:1:
/usr/include/c++/14/bits/stringfwd.h:77:33: note:   'std::string'
   77 |   typedef basic_string<char>    string;
      |                                 ^~~~~~
/usr/include/c++/14/string:76:11: note:   'std::pmr::string'
   76 |     using string    = basic_string<char>;
      |           ^~~~~~
a.cc:5:5: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    5 |     cin>>s;
      |     ^~~
      |     std::cin
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:146:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:5:10: error: 's' was not declared in this scope
    5 |     cin>>s;
      |          ^
a.cc:7:11: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    7 |           cout << "A\n";
      |           ^~~~
      |           std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:9:11: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    9 |           cout << "a\n";
      |           ^~~~
      |           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 Question1 {
   public static void main(String[] args) {
       Scanner s = new Scanner(System.in);
       String st = s.next();
       char c = st.charAt(0);
       if(Character.isUpperCase(c)) {
           System.out.println("A");
       }
       else {
           System.out.println("a");
       }
   }
}


Compiler output:
Main.java:2: error: class Question1 is public, should be declared in a file named Question1.java
public class Question1 {
       ^
1 error
Language: C++

int main() {
	char α;
	cin >> α;
	if (65 <= α <= 90) {
		cout << "A";
	}
	else {
		cout << "a";

	}

}


Compiler output:
a.cc: In function 'int main()':
a.cc:3:9: error: 'cin' was not declared in this scope
    3 |         cin >> α;
      |         ^~~
a.cc:5:17: error: 'cout' was not declared in this scope
    5 |                 cout << "A";
      |                 ^~~~
a.cc:8:17: error: 'cout' was not declared in this scope
    8 |                 cout << "a";
      |                 ^~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
    char ch;
    cin>>ch;
    if(ch>='A' and ch<='Z')
    print('A')
    else{
        print('a')
    }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:5: error: 'print' was not declared in this scope; did you mean 'rint'?
    7 |     print('A')
      |     ^~~~~
      |     rint
Language: C++

#include <iostream>
#include <iomanip>
#include <math.h>
using namespace std;

int main()
{
  char s;

  cin >> s;

  if(isuppper(s))
  {
    cout << "A" << endl;
  }
  else
  {
    cout << "a" << endl;
  }

  //cout << fixed << setprecision(8) << s << " " << l << " " << endl;

  return 0;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:12:6: error: 'isuppper' was not declared in this scope; did you mean 'isupper'?
   12 |   if(isuppper(s))
      |      ^~~~~~~~
      |      isupper
Language: C


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

	char alpha;
	
	scanf("%s",&alpha);
	
	if( (alpha >='a') && (alpha<='z')
	{
		printf("a");
	}
	if( (alpha >='A') && (alpha<='Z')
	{
		printf("A");
	}
    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:11:42: error: expected ')' before '{' token
   11 |         if( (alpha >='a') && (alpha<='z')
      |           ~                              ^
      |                                          )
   12 |         {
      |         ~                                 
main.c:20:1: error: expected declaration or statement at end of input
   20 | }
      | ^
Language: C

#include<stdio.h>
 
int Main() {
   char ch;
 
   printf("\nEnter The Character : ");
   scanf("%c", &ch);
 
   if (ch >= 'A' && ch <= 'Z')
      printf("Character is Upper Case Letters");
   else
      printf("Character is Not Upper Case Letters");
 
   return 0;
}

Compiler output:
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/14/../../../x86_64-linux-gnu/Scrt1.o: in function `_start':
(.text+0x17): undefined reference to `main'
collect2: error: ld returned 1 exit status