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

import java.util.*;
public class Main {
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    
    int a = sc.nextInt();
    int b = sc.nextInt();
    int c = sc.nextInt();
    int d = sc.nextInt();
    
    int ab = a * b;
    int cd = c * d;
    
    if (ad = cd) {
      System.out.println(ad);
    } else if (ad > cd) {
      System.out.println(ad);
    } else if (cd > ad) {
      System.out.println(cd);
    }
  }
}

Compiler output:
Main.java:14: error: cannot find symbol
    if (ad = cd) {
        ^
  symbol:   variable ad
  location: class Main
Main.java:15: error: cannot find symbol
      System.out.println(ad);
                         ^
  symbol:   variable ad
  location: class Main
Main.java:16: error: cannot find symbol
    } else if (ad > cd) {
               ^
  symbol:   variable ad
  location: class Main
Main.java:17: error: cannot find symbol
      System.out.println(ad);
                         ^
  symbol:   variable ad
  location: class Main
Main.java:18: error: cannot find symbol
    } else if (cd > ad) {
                    ^
  symbol:   variable ad
  location: class Main
5 errors
Language: C++

#include <iostream>
#include <string>

using namespace std;

int main() {
    cin >> a >> b >> c >> d;
    if (a * b > c * d) {
        cout << a * b;
    } else {
        cout << c * d;
    }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:12: error: 'a' was not declared in this scope
    7 |     cin >> a >> b >> c >> d;
      |            ^
a.cc:7:17: error: 'b' was not declared in this scope
    7 |     cin >> a >> b >> c >> d;
      |                 ^
a.cc:7:22: error: 'c' was not declared in this scope
    7 |     cin >> a >> b >> c >> d;
      |                      ^
a.cc:7:27: error: 'd' was not declared in this scope
    7 |     cin >> a >> b >> c >> d;
      |                           ^
Language: C++

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

int main(){
	int A,B,C,D;
	cin >> A >> B >> C >> D;
	cout << max(a*B,C*D) << endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:21: error: 'a' was not declared in this scope
    7 |         cout << max(a*B,C*D) << endl;
      |                     ^
Language: C++

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int a = Integer.parseInt(sc.next());
        int b = Integer.parseInt(sc.next());
        int c = Integer.parseInt(sc.next());
        int d = Integer.parseInt(sc.next());
        System.out.println(a * b > c * d ? a * b : c * d);
    }
}

Compiler output:
a.cc:1:1: error: 'import' does not name a type
    1 | import java.util.Scanner;
      | ^~~~~~
a.cc:1:1: note: C++20 'import' only available with '-fmodules-ts'
a.cc:3:1: error: expected unqualified-id before 'public'
    3 | public class Main {
      | ^~~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
 
int main(){
  int a,b,c,d;
  cin >> a >> b >> c >> d;
  //if(x=='a'||x=='i'||x=='u'||x=='e'||x=='o')){cout << "vowel" << endl;}
  //else{cout << "consonant" << endl;}
  int x = a*b;
  int y = c*d;
  if(x<y){cout << y << endl;}
  else if(y<x){cout << x << endl;}
  else{cout << x << endl;}
  return 0;

Compiler output:
a.cc: In function 'int main()':
a.cc:15:12: error: expected '}' at end of input
   15 |   return 0;
      |            ^
a.cc:5:11: note: to match this '{'
    5 | int main(){
      |           ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
 
int main(){
  int a,b,c,d;
  cin >> a >> b >> c >> d;
  //if(x=='a'||x=='i'||x=='u'||x=='e'||x=='o')){cout << "vowel" << endl;}
  //else{cout << "consonant" << endl;}
  int x = a*b;
  int y = c*d;
  if(x<y){cout << y << endl;}
  else if(y<x){cout < x << endl;}
  else{cout << x << endl;}
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:13:25: error: invalid operands of types 'int' and '<unresolved overloaded function type>' to binary 'operator<<'
   13 |   else if(y<x){cout < x << endl;}
      |                       ~~^~~~~~~
Language: C++

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

int main(){
  int A,B,C,D;
  cin >> A >> B >> C >> D;
  if(A * B < C * D) cout << C * D << endl;
  if(A * B => C * D) cout << A * B << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:13: error: expected primary-expression before '>' token
    8 |   if(A * B => C * D) cout << A * B << endl;
      |             ^
Language: C++

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

int main() {
  int n;
  cin >> n;
  string s;
  cin >> s;
  int cnt = 0;
  vector<int> a(n);
  if(s.at(0) == 'I'){
      a.at(0) = 1;
    }
    else {
      a.at(0) = -1;
    }
  for(int i=1;i<n;i++){
    if(s.at(i) == 'I'){
      a.at(i) = a.at(i-1) +1;
    }
    else {
      a.at(i) = a.at(i-1) -1;
    }
  }
  sort(a.begin(),a.end());
  cout << a.(n-1) << endl;
  
  return 0;
}
      


Compiler output:
a.cc: In function 'int main()':
a.cc:26:13: error: expected unqualified-id before '(' token
   26 |   cout << a.(n-1) << endl;
      |             ^
Language: C++

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

int main() {
  int a,b,c,d;
  cin >> a >> b >> c >> d;
  int ans = max(a*b,c*d);
  cout << ans << endl;
  
  return 0;
}

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

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

int main() {
  int a, b, c, d;
  cin >> a >> b >> c >> d;
  
  int ans=max(a*b, c*d)
  
  cout << ans << endl;
  }

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

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

int A, B, C, D;

int main () {
	cin >> A >> B >> C >> D;
	if (A*B=C*D) {
		cout << A*B << endl;
	} else if (A*B>C*D) {
		cout << A*B << endl;
	} else {
		cout << C*D << endl;
	}
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:14: error: lvalue required as left operand of assignment
    8 |         if (A*B=C*D) {
      |             ~^~
Language: C++

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

int a, b, c, d;

int main () {
	cin >> a >> b >> c >> d;
	if (a*b=c*d) {
		cout << a*b << endl;
	} else if (a*b>c*d) {
		cout << a*b << endl;
	} else {
		cout << c*d << endl;
	}
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:14: error: lvalue required as left operand of assignment
    8 |         if (a*b=c*d) {
      |             ~^~
Language: C

#include<stdio.h>
 
int main()
{
  int a, b, c, d;

  scanf("%d %d %d %d ", &a, &b, &c, &d);
  
  if ((a*b) >= (c*d))
   {
     printf("%d", a*b)
   }
  else
   {
     printf("%d", c*d)
   }


  

  
  return 0;
  
}


Compiler output:
main.c: In function 'main':
main.c:11:23: error: expected ';' before '}' token
   11 |      printf("%d", a*b)
      |                       ^
      |                       ;
   12 |    }
      |    ~                   
main.c:15:23: error: expected ';' before '}' token
   15 |      printf("%d", c*d)
      |                       ^
      |                       ;
   16 |    }
      |    ~
Language: C++

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

int main(){
  int a,b,c,d;
  cin a >> b >> c >> d;
  cout << max(a*b, c*d) << endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:6: error: expected ';' before 'a'
    6 |   cin a >> b >> c >> d;
      |      ^~
      |      ;
Language: C++

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

int main(){
  int a,b,c,d;
  cin a >> b >> c >> d;
  cout << max(a*b, c*d) << endl:
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:6: error: expected ';' before 'a'
    6 |   cin a >> b >> c >> d;
      |      ^~
      |      ;
a.cc:7:32: error: expected ';' before ':' token
    7 |   cout << max(a*b, c*d) << endl:
      |                                ^
      |                                ;
Language: C

#include<iostream>
using namespace std;

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

    if(a*b >= c*d) cout << a*b << endl;
    else cout << c*d << endl;
}

Compiler output:
main.c:1:9: fatal error: iostream: No such file or directory
    1 | #include<iostream>
      |         ^~~~~~~~~~
compilation terminated.
Language: C++

#include<iostream>
int main(){
  int a, b, c, d;
  cin >> a >> b >> c >> d;
  
  if(a*b > c*d)
    cout << a*b;
  else
    cout << c*d;
  
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:4:3: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    4 |   cin >> a >> b >> c >> d;
      |   ^~~
      |   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:7:5: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    7 |     cout << a*b;
      |     ^~~~
      |     std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:9:5: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    9 |     cout << c*d;
      |     ^~~~
      |     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;

const int MOD = 1000000007;
const int INF = 1e9;

//long long
using ll = long long;

//出力系
#define print(x) cout << x << endl
#define yes cout << "Yes" << endl
#define YES cout << "YES" << endl
#define no cout << "No" << endl
#define NO cout << "NO" << endl
 
// begin() end()
#define all(x) (x).begin(),(x).end()

//for
#define REP(i,n) for(int i=0, i##_len=(n); i<i##_len; ++i)
#define REPR(i,n) for(int i=n, i##_len=(n); i>=0; i--)
#define FOR(i,a,b) for(int i=(a), i##_len=(b); i<i##_len; ++i)

//最大公約数 
 ll gcd(ll a,ll b){
 if(b == 0) return a;
 return gcd(b,a%b);
 }

//最小公倍数
 ll lcm(ll a,ll b){
 ll g = gcd(a,b);
 return a / g * b; // Be careful not to overflow  if(a < b) return gcd(b, a);
  unsigned r;
  while ((r=a%b)) {
    a = b;
    b = r;
  }
  return b;
} 




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

if(a == b){
  int A, B, C, D;
  cin >> A >> B >> C >> D;

  int AS = A * B;
  int BS = C * D;

  if(AS >= BS) print("AS");
  else print ("BS")l

}

Compiler output:
a.cc: In function 'int main()':
a.cc:58:20: error: expected ';' before 'l'
   58 |   else print ("BS")l
      |                    ^
a.cc:60:2: error: expected '}' at end of input
   60 | }
      |  ^
a.cc:46:12: note: to match this '{'
   46 | int main() {
      |            ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  int A,B,C,D;
  cin >> A >> B >> C >> D;
  int a=A*B,b=C*D
  if (a>b){
    cout << a << endl;
  }
  else {
    cout << b << endl;
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:3: error: expected ',' or ';' before 'if'
    8 |   if (a>b){
      |   ^~
a.cc:11:3: error: 'else' without a previous 'if'
   11 |   else {
      |   ^~~~
Language: Java

import java.util.Scanner;

class Main{
  public static void main(String[] args){
    Scanner sc=new Scanner(System.in);
    
    int N=sc.nextInt();
    String s=sc.next();
    int x=0;
    int max=0;
    for(int i=0; i<N; i++){
     if(s.charAt(i).equals('I')){
      x++;
     }else{
      x--;
     }
      if(max<x){
       max=x;
      }
    }
    System.out.println(max);
  }
}

Compiler output:
Main.java:12: error: char cannot be dereferenced
     if(s.charAt(i).equals('I')){
                   ^
1 error
Language: C++

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

int main(){
ios::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
int a, b, c d;
cin >> a >> b >> c >> d;
(a * c >= b*d) ? cout << a*c << "\n" : cout << b*d << "\n";
return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:13: error: expected initializer before 'd'
    8 | int a, b, c d;
      |             ^
a.cc:9:18: error: 'c' was not declared in this scope
    9 | cin >> a >> b >> c >> d;
      |                  ^
a.cc:9:23: error: 'd' was not declared in this scope
    9 | cin >> a >> b >> c >> d;
      |                       ^
Language: C

#include<stdio.h>
int main()
{
    int A,B,C,D;
    scanf("%d %d %d %d",&A,&B,&C,&D);
    int area1,area2;
    area1=A*B;
    area2=C*D;
    if(area1>area2)
    {
        printf("%d",area1);
    }
    if(area1==area2)
    {
      int h=area1|area2
         printf("%d",h);
    }
    return 0;
}


Compiler output:
main.c: In function 'main':
main.c:16:10: error: expected ',' or ';' before 'printf'
   16 |          printf("%d",h);
      |          ^~~~~~
Language: C++

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

typedef long long ll;

using namespace std;
int main(){
    int A, B, C, D;
    cin >> A >> B >> C >> D;
    int S1 = A * B;
    int S2 = C * D; 
    int ans = 0;
    if (S1 >= S2) {
    	ans = S1;
    } 
    else {
    	ans = S2;
    }

    count << ans;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:24:11: error: invalid operands of types '<unresolved overloaded function type>' and 'int' to binary 'operator<<'
   24 |     count << ans;
      |     ~~~~~~^~~~~~
Language: C++

#include<iostream>
#include<stdio.h>
using namespace std;
int main(){
	double A,B,C,D;
	long long space1,space2;
cin>>A>>B>>C>>D;
	space1=A*B;
	space2=C*D;
	if(space1==space2)
	printf("%lld",space1);
	else if(space1>space2)	
	printf("%lld",space1);
	else if(space2>space1)
		printf("%lld",space2);
return0;}

Compiler output:
a.cc: In function 'int main()':
a.cc:16:1: error: 'return0' was not declared in this scope
   16 | return0;}
      | ^~~~~~~
Language: C++

#include<stdio.h> 
int main()
{
	int A,B,C,D;
	int area1,area2;
	printf("Enter a value for A,B,C and D\n");
	scanf("%d%d%d%d",&A,&B,&C,&D);
	while(0<=a<=10^4 && 0<=b<=10^4 && 0<=c<=10^4 && 0<=d<=10^4){
		area1=A*B;
		area2=C*D;
		if(area1==area2)
		{
			printf("%d ",area1);
			break;
		}
			else if(area1>area2)
		{
		printf("The first rectangle has an area of""*%d""=%d"", and the second rectangle has an area of""*%d""=%d"". Thus, the output should be%d",A,B,area1,C,D,area2,area1);
		    break;
			}
				else
		{
			printf("The first rectangle has an area of""*%d""=%d"", and the second rectangle has an area of""*%d""=%d"". Thus, the output should be",A,B,area1,C,D,area2,area2);
			}
		}
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:18: error: 'a' was not declared in this scope
    8 |         while(0<=a<=10^4 && 0<=b<=10^4 && 0<=c<=10^4 && 0<=d<=10^4){
      |                  ^
a.cc:8:32: error: 'b' was not declared in this scope
    8 |         while(0<=a<=10^4 && 0<=b<=10^4 && 0<=c<=10^4 && 0<=d<=10^4){
      |                                ^
a.cc:8:46: error: 'c' was not declared in this scope
    8 |         while(0<=a<=10^4 && 0<=b<=10^4 && 0<=c<=10^4 && 0<=d<=10^4){
      |                                              ^
a.cc:8:60: error: 'd' was not declared in this scope
    8 |         while(0<=a<=10^4 && 0<=b<=10^4 && 0<=c<=10^4 && 0<=d<=10^4){
      |                                                            ^
Language: C++

#include<stdio.h> 
#include<iostream>
using namespace std;
int main()
{
	int a,b,c,d;
	int area1,area2;
	scanf("%d%d%d%d",&a,&b,&c,&d);
	while(0<=a<=10^4 && 0<=b<=10^4 && 0<=c<=10^4 && 0<=d<=10^4){
		area1=a*b;
		area2=c*d;
		if(area1==area2)
		
			printf("%d ",area1);
			break;
		
			else if(area1>area2)
		
			cout<<"The first rectangle has an area of"<<a<<"*"<<b<<"="<<area1<<", and the second rectangle has an area of"<<c<<"*"<<d<<"="<<area2<<". Thus, the output should be"<<area1<<" the larger area."<<endl;
			break;
			
				else
		
				cout<<"The first rectangle has an area of"<<a<<"*"<<b<<"="<<area1<<", and the second rectangle has an area of"<<c<<"*"<<d<<"="<<area2<<". Thus, the output should be"<<area2<<" the larger area."<<endl;
			break;
			break;
			
		}
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:17:25: error: 'else' without a previous 'if'
   17 |                         else if(area1>area2)
      |                         ^~~~
a.cc:22:33: error: 'else' without a previous 'if'
   22 |                                 else
      |                                 ^~~~
Language: C++

#include<stdio.h> 
#include<iostream>
using namespace std;
int main()
{
	int a,b,c,d;
	int area1,area2;
	printf("Enter a value for A,B,C and D\n");
	scanf("%d%d%d%d",&a,&b,&c,&d);
	while(0<=a<=10^4 && 0<=b<=10^4 && 0<=c<=10^4 && 0<=d<=10^4){
		area1=a*b;
		area2=c*d;
		if(area1==area2)
		
			printf("%d ",area1);
			break;
		
			else if(area1>area2)
		
			cout<<"The first rectangle has an area of"<<a<<"*"<<b<<"="<<area1<<", and the second rectangle has an area of"<<c<<"*"<<d<<"="<<area2<<". Thus, the output should be"<<area1<<" the larger area."<<endl;
			break;
			
				else
		
				cout<<"The first rectangle has an area of"<<a<<"*"<<b<<"="<<area1<<", and the second rectangle has an area of"<<c<<"*"<<d<<"="<<area2<<". Thus, the output should be"<<area2<<" the larger area."<<endl;
			break;
			break;
			
		}
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:18:25: error: 'else' without a previous 'if'
   18 |                         else if(area1>area2)
      |                         ^~~~
a.cc:23:33: error: 'else' without a previous 'if'
   23 |                                 else
      |                                 ^~~~
Language: C++

#include <iostream>

using namespace std;

int main()
{
   int area1;
   int area2;
   int A,B,C,D;
   cin>>A>>B>>C>>D;
   area1=A*B;
   area2=C*D;
   if(area1>area2)
    cout<<"the large area="<<area1;
    else if(area2>area1)
        cout<<"the large area="<<area2;
    else (area1==area2)
        cout<<area1;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:17:24: error: expected ';' before 'cout'
   17 |     else (area1==area2)
      |                        ^
      |                        ;
   18 |         cout<<area1;
      |         ~~~~
Language: C++

#include <iostream>
using namespace std;
int main(){
int A,B,C,D,x,y;
cin>>A>>B>>C>>D;
x=A*B;
y=C*D;
if(x>y)
cout<<x;
else if(x<y)
cout<<y;
else
cout<<z;

}

Compiler output:
a.cc: In function 'int main()':
a.cc:13:7: error: 'z' was not declared in this scope
   13 | cout<<z;
      |       ^
Language: C++

#include <bits/stdc++.h>
using namespace std; 
int main(){
int A,B,C,D;
cin>>A>>B>>C>>D;
if((A*B)>=(B*D))
{court<<A*B;
}else
{cout<<C*D;
}}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:2: error: 'court' was not declared in this scope
    7 | {court<<A*B;
      |  ^~~~~
Language: C++

#include <iostream>
using namespace std; 
int main(){
int A,B,C,D;
scanf("%d%d%d%d",&A,&B,&C,&D);
if((A*B)>=(B*D))
{printf("%d",(A*B));
}
else
{
printf("%d"),(C*D));
}
return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:19: error: expected ';' before ')' token
   11 | printf("%d"),(C*D));
      |                   ^
      |                   ;
Language: C++


#include <iostream>
using namespace std;
int main(){
int s,k;
cin>>k>>s;
for(int  x=0;x<=k;x++)
{
for(int  y=0;y<=k;y++)
{
int z=s-(x+y);
if((z>=0)&&(z<=k){
count ++;
}}}}
cout<<count;
return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:18: error: expected ')' before '{' token
   12 | if((z>=0)&&(z<=k){
      |   ~              ^
      |                  )
a.cc:14:2: error: expected primary-expression before '}' token
   14 | }}}}
      |  ^
a.cc: At global scope:
a.cc:15:1: error: 'cout' does not name a type
   15 | cout<<count;
      | ^~~~
a.cc:16:1: error: expected unqualified-id before 'return'
   16 | return 0;
      | ^~~~~~
a.cc:17:1: error: expected declaration before '}' token
   17 | }
      | ^
Language: C++

#include<iostream>
using namespace std;
int main()
{
int a,b,c,d,r1,r2;
cin>>a>>b>>c>>d;r1=a*b;r2=c*d;
if(r1>r2)
cout<<r1;
else if(r2>r1)
cout<<r2;
else 
cout<<r1;
return 0;

Compiler output:
a.cc: In function 'int main()':
a.cc:13:10: error: expected '}' at end of input
   13 | return 0;
      |          ^
a.cc:4:1: note: to match this '{'
    4 | {
      | ^
Language: C++

using namespace std; 
int main() { 

int a,b,c,d,a1,a2; 

scanf("%d%d%d%d" , &a,&b,&c,&d) ; 


a1= a*b; 
a2=c*d; 

if ( a1 >= a2 ) { 
 printf("%d" , a1 ) ;
 
} 
else { 
printf("%d" , a2) ;
}


return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:1: error: 'scanf' was not declared in this scope
    6 | scanf("%d%d%d%d" , &a,&b,&c,&d) ;
      | ^~~~~
a.cc:13:2: error: 'printf' was not declared in this scope
   13 |  printf("%d" , a1 ) ;
      |  ^~~~~~
a.cc:1:1: note: 'printf' is defined in header '<cstdio>'; this is probably fixable by adding '#include <cstdio>'
  +++ |+#include <cstdio>
    1 | using namespace std;
a.cc:17:1: error: 'printf' was not declared in this scope
   17 | printf("%d" , a2) ;
      | ^~~~~~
a.cc:17:1: note: 'printf' is defined in header '<cstdio>'; this is probably fixable by adding '#include <cstdio>'
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
   int a,b,c,d;
  scanf("%d%d%d%d",&a,&B,&c,&d);
    int a1=a*b;
    int a2=c*d;
   if(a1>a2)
    printf("%d",a1);
  
    else
   printf("%d",a2);  

}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:24: error: 'B' was not declared in this scope
    5 |   scanf("%d%d%d%d",&a,&B,&c,&d);
      |                        ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
   int a,b,c,d;
  scanf("%d%d%d%d",&a,&B,&c,&d);
    int a1=a*b;
    int a2=c*d;
   if(a1>a2){
    printf("%d",a1);
  }
    else{
   printf("%d",a2);  
}
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:24: error: 'B' was not declared in this scope
    5 |   scanf("%d%d%d%d",&a,&B,&c,&d);
      |                        ^
Language: C

#include<stdio.h>
int main(void)
{
  fgets(str,sizeof(str),stdin);
  sscanf(str,"%d%d%d%d",&a,&b,&c,&d);
  if((a*b) > (c*d))
  {
    printf("%d\n",a*b);
  }
  else
  {
    printf("%d\n",c*d);
  }
  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:4:9: error: 'str' undeclared (first use in this function)
    4 |   fgets(str,sizeof(str),stdin);
      |         ^~~
main.c:4:9: note: each undeclared identifier is reported only once for each function it appears in
main.c:5:26: error: 'a' undeclared (first use in this function)
    5 |   sscanf(str,"%d%d%d%d",&a,&b,&c,&d);
      |                          ^
main.c:5:29: error: 'b' undeclared (first use in this function)
    5 |   sscanf(str,"%d%d%d%d",&a,&b,&c,&d);
      |                             ^
main.c:5:32: error: 'c' undeclared (first use in this function)
    5 |   sscanf(str,"%d%d%d%d",&a,&b,&c,&d);
      |                                ^
main.c:5:35: error: 'd' undeclared (first use in this function)
    5 |   sscanf(str,"%d%d%d%d",&a,&b,&c,&d);
      |                                   ^
Language: C++

#include <bits/stdc++.h>
#define rep(i,n) for (int i = 0; i < (n); i++)
#define rep1(i,n) for (int i = 1; i <= (n); i++)
#define repi(i,a,b) for (int i = (a); i < (b); i++)
#define all(x) (x).begin(),(x).end()
using namespace std;
using uint = unsigned int;
using ll = long long;
using ull = unsigned long long;
using vi = vector<int>;
using vvi = vector<vi>;
using pii = pair<int, int>;
using vc = vector<char>;
using vvc = vector<vc>;
using vs = vector<string>;

int main() {
  int A, B, C, D;
  cin >> A >> B >> C >> D;
  
  cout << max(AB,CD) << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:21:15: error: 'AB' was not declared in this scope; did you mean 'B'?
   21 |   cout << max(AB,CD) << endl;
      |               ^~
      |               B
a.cc:21:18: error: 'CD' was not declared in this scope; did you mean 'D'?
   21 |   cout << max(AB,CD) << endl;
      |                  ^~
      |                  D
Language: C++

#include<iostream>
#include<cmath>
#include<string>
#include<vector>
#include<numeric>
using namespace std;
int main(){
  int a,b,c,d;
  cin >> a >> b >> c >> d;
  long double sum1 = a * b;
  long double sum2 = c * d;
  if(sum1 > sum2){
  ┊ cout << sum1;
  }else{
  ┊ cout << sum2;
  }
  return 0;
}

Compiler output:
a.cc:13:3: error: extended character ┊ is not valid in an identifier
   13 |   ┊ cout << sum1;
      |   ^
a.cc:15:3: error: extended character ┊ is not valid in an identifier
   15 |   ┊ cout << sum2;
      |   ^
a.cc: In function 'int main()':
a.cc:13:3: error: '\U0000250a' was not declared in this scope
   13 |   ┊ cout << sum1;
      |   ^
a.cc:15:3: error: '\U0000250a' was not declared in this scope
   15 |   ┊ cout << sum2;
      |   ^
Language: Java

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        Integer A = Integer.parseInt(sc.next());
        Integer B = Integer.parseInt(sc.next());
        Integer C = Integer.parseInt(sc.next());
        Integer D = Integer.parseInt(sc.next());

        int s1 = A*B;
        int s2 = C*D;

        if(s1>s2) System.out.println(s1);
        else System.out.println(s2);

    }
}


Compiler output:
Main.java:4: error: cannot find symbol
        Scanner sc = new Scanner(System.in);
        ^
  symbol:   class Scanner
  location: class Main
Main.java:4: error: cannot find symbol
        Scanner sc = new Scanner(System.in);
                         ^
  symbol:   class Scanner
  location: class Main
2 errors
Language: C++

#!/usr/bin/env python3

def main():
    line = input()
    (sA, sB, sC, sD) = line.split()
    A = int(sA)
    B = int(sB)
    C = int(sC)
    D = int(sD)
    area1 = A * B
    area2 = C * D
    if area1 > area2:
        answer = area1
    else:
        answer = area2
    print(answer)

main()


Compiler output:
a.cc:1:2: error: invalid preprocessing directive #!
    1 | #!/usr/bin/env python3
      |  ^
a.cc:3:1: error: 'def' does not name a type
    3 | def main():
      | ^~~
Language: C++

#include<stdio.h>
int main(void)
{
	int a,b,c,d;
	scanf("%d",&a);
	scanf("%d",&b);
	scanf("%d",&c);
	scanf("%d",&d);
	s=a*b;
	k=c*d;
	if(s>k)	{
		printf("%d\n",s);
	}
	if(s<k)	{
		printf("%d\n",k);
	}
	if(s==k)	{
	    printf("%d\n",k);
	}
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:9: error: 's' was not declared in this scope
    9 |         s=a*b;
      |         ^
a.cc:10:9: error: 'k' was not declared in this scope
   10 |         k=c*d;
      |         ^
Language: C++

#include<iostream>
using namespace std;

int main(void){
  int A,B,C,D,men1,men2;
  cin>>A>>B>>C>>D;
  men1=A*B;
  men2=C*D;
  if(men1<men2){
    cout<<men2;
  }
  else{
    cout<<men1
  }
  return 0;
  


}




Compiler output:
a.cc: In function 'int main()':
a.cc:13:15: error: expected ';' before '}' token
   13 |     cout<<men1
      |               ^
      |               ;
   14 |   }
      |   ~
Language: C++

#include<iostream>
#include<algorithm>
int main(){
  int a,b,c,d;cin>>a>>b>>c>>d;
  cout<<max({a*b,c*d});
}

Compiler output:
a.cc: In function 'int main()':
a.cc:4:15: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    4 |   int a,b,c,d;cin>>a>>b>>c>>d;
      |               ^~~
      |               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:5:3: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    5 |   cout<<max({a*b,c*d});
      |   ^~~~
      |   std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:5:9: error: 'max' was not declared in this scope; did you mean 'std::max'?
    5 |   cout<<max({a*b,c*d});
      |         ^~~
      |         std::max
In file included from /usr/include/c++/14/algorithm:61,
                 from a.cc:2:
/usr/include/c++/14/bits/stl_algo.h:5716:5: note: 'std::max' declared here
 5716 |     max(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
Language: C++

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

int main(){
  int a,b,c,d;
  cin>> a >> b >> c >> d;
  if(a*b > c*d){
    cout<< a*b<<endl;
  }else if (a*b < c*d){
    cout << c*d<< endl;
  }else if (a*b = c*d){
    cout<< a*b<<endl;
  }
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:14: error: lvalue required as left operand of assignment
   11 |   }else if (a*b = c*d){
      |             ~^~
Language: C++

#include <iostream>
#include <string>
#include <algorithm>
#include <functional>
#include <vector>
#include <utility>
#include <cstring>
#include <iomanip>
#include <numeric>
#include <cmath>
#include <queue>
using namespace std;
typedef long long ll;
const int INF = 1<<30;
const int MOD = 1e9 + 7;
int main()
{
    cin.tie(0);
    ios::sync_with_stdio(false);
    int n,m,a,b;string s;char c;
    cin>>n>>m>.a>>b;
    cout<<max(a*b,n*m)<<endl;
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:21:15: error: expected primary-expression before '.' token
   21 |     cin>>n>>m>.a>>b;
      |               ^
Language: C++

#include <iostream>
using namespace std;
 
int main(){
  int A,B,C,D;
  cin >> A >> B >> C >> D;
  area1 = A*B;
  area2 = C*D;
  if (area1>area2){
  	cout << area1;
  }
  else cout << area2;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:3: error: 'area1' was not declared in this scope
    7 |   area1 = A*B;
      |   ^~~~~
a.cc:8:3: error: 'area2' was not declared in this scope
    8 |   area2 = C*D;
      |   ^~~~~
Language: C++

#include <iostream>
usinfg namespace std;
 
int main(){
  int A,B,C,D;
  cin >> A >> B >> C >> D;
  area1 = A*B;
  area2 = C*D;
  if (area1>area2){
  	cout << area1;
  }
  else cout << area2;
}

Compiler output:
a.cc:2:1: error: 'usinfg' does not name a type
    2 | usinfg namespace std;
      | ^~~~~~
a.cc: In function 'int main()':
a.cc:6:3: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    6 |   cin >> A >> B >> C >> D;
      |   ^~~
      |   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:7:3: error: 'area1' was not declared in this scope
    7 |   area1 = A*B;
      |   ^~~~~
a.cc:8:3: error: 'area2' was not declared in this scope
    8 |   area2 = C*D;
      |   ^~~~~
a.cc:10:9: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   10 |         cout << area1;
      |         ^~~~
      |         std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:12:8: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   12 |   else cout << area2;
      |        ^~~~
      |        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 <iostream>
usinfg namesoace std;

int main(){
  int A,B,C,D;
  cin >> A >> B >> C >> D;
  area1 = A*B;
  area2 = C*D;
  if (area1>area2){
  	cout << area1;
  }
  else cout << area2;
}

Compiler output:
a.cc:2:1: error: 'usinfg' does not name a type
    2 | usinfg namesoace std;
      | ^~~~~~
a.cc: In function 'int main()':
a.cc:6:3: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    6 |   cin >> A >> B >> C >> D;
      |   ^~~
      |   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:7:3: error: 'area1' was not declared in this scope
    7 |   area1 = A*B;
      |   ^~~~~
a.cc:8:3: error: 'area2' was not declared in this scope
    8 |   area2 = C*D;
      |   ^~~~~
a.cc:10:9: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   10 |         cout << area1;
      |         ^~~~
      |         std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:12:8: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   12 |   else cout << area2;
      |        ^~~~
      |        std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
Language: C++

using namespace std;
int main()
{
  int A, B, C, D;
  cin >> A >> B >> C >> D;
  cout << max(A*B, C*D) << endl;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:5:3: error: 'cin' was not declared in this scope
    5 |   cin >> A >> B >> C >> D;
      |   ^~~
a.cc:1:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
  +++ |+#include <iostream>
    1 | using namespace std;
a.cc:6:3: error: 'cout' was not declared in this scope
    6 |   cout << max(A*B, C*D) << endl;
      |   ^~~~
a.cc:6:3: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:6:11: error: 'max' was not declared in this scope
    6 |   cout << max(A*B, C*D) << endl;
      |           ^~~
a.cc:6:28: error: 'endl' was not declared in this scope
    6 |   cout << max(A*B, C*D) << endl;
      |                            ^~~~
a.cc:1:1: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
  +++ |+#include <ostream>
    1 | using namespace std;
Language: C++

#include <iostream>
#include <vector>
#include <string>
#include <cstdlib>
#include <algorithm>
#include <cstdio>
#include <cstring>
#include <stack>
#include <math.h>
#include <string.h>
#include <map>
#define Z class
#define ln cout<<'\n'
#define ll long long
#define rep(i, n) for(int i = 0; i < (n); ++i)
//ASCII a=97, A=65
// int H[N]; rep(i,N) scanf("%d", &H[i]);
// int max_x = *std::max_element(x.begin(), x.end());
// int min_y = *std::min_element(y.begin(), y.end());
// sort(vec.begin(), vec.end()); std::greater<>()
// reverse(vec.begin(), vec.end());
// scanf("%s",s);
// printf("%d\n",end-start+1);
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;}
template<Z A>void pr(A a){cout<<a;ln;}
template<Z A,Z B>void pr(A a,B b){cout<<a<<' ';pr(b);}
template<Z A,Z B,Z C>void pr(A a,B b,C c){cout<<a<<' ';pr(b,c);}
template<Z A,Z B,Z C,Z D>void pr(A a,B b,C c,D d){cout<<a<<' ';pr(b,c,d);}
template<Z A>void PR(A a,ll n){rep(i,n){if(i)cout<<' ';cout<<a[i];}ln;}

int GCD(int a, int b) { return b ? GCD(b, a%b) : a; }
const long long INF = 1LL << 60;

int main(){
    int a,b,c,d; cin >> a >> b >> c >> d;
    pr(max(A*B,C*D));
}


Compiler output:
a.cc: In function 'int main()':
a.cc:38:12: error: 'A' was not declared in this scope
   38 |     pr(max(A*B,C*D));
      |            ^
a.cc:38:14: error: 'B' was not declared in this scope
   38 |     pr(max(A*B,C*D));
      |              ^
a.cc:38:16: error: 'C' was not declared in this scope
   38 |     pr(max(A*B,C*D));
      |                ^
a.cc:38:18: error: 'D' was not declared in this scope
   38 |     pr(max(A*B,C*D));
      |                  ^
Language: C

#include <stdio.h>
int main(int argc, char **argv) {
  int a,b,c,d;
  scanf("%d %d %d %d\n", &a, &b, &c, &d);
  printf("%d", ((a*b)<(c*d)? c*d : a*b);
}

Compiler output:
main.c: In function 'main':
main.c:5:40: error: expected ')' before ';' token
    5 |   printf("%d", ((a*b)<(c*d)? c*d : a*b);
      |         ~                              ^
      |                                        )
main.c:5:41: error: expected ';' before '}' token
    5 |   printf("%d", ((a*b)<(c*d)? c*d : a*b);
      |                                         ^
      |                                         ;
    6 | }
      | ~
Language: C

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

int main() {
	int a,b,c,d;
	cin >> a >> b >> c >> d;
	cout << max(a*b,c*d) << endl;
}

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

#include <iostream>
using namespace std;

int main() {
	int a,b,c,d;
	int ab,cd;
	cin >> a >> b >> c >> d;
	ab=a*b;
	cd=c*d;
	if(ab=>cd){
		cout << ab;
	}
	else{
		cout << cd;
	}
	
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:15: error: expected primary-expression before '>' token
   10 |         if(ab=>cd){
      |               ^
Language: C++

import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        int c = sc.nextInt();
        int d = sc.nextInt();
        sc.close();

        int ab = a * b;
        int cd = c * d;
        int s = ab > cd ? ab : cd;
        
        System.out.println(s);
    }
}


Compiler output:
a.cc:1:1: error: 'import' does not name a type
    1 | import java.util.*;
      | ^~~~~~
a.cc:1:1: note: C++20 'import' only available with '-fmodules-ts'
a.cc:3:1: error: expected unqualified-id before 'public'
    3 | public class Main {
      | ^~~~~~
Language: C++

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

int main() {
  int A,B,C,D;
  cin >> A >> B;
  cin >> C >> D;
  int K;
  int H;
  K = A*B
  H = C*D
  if (K >= H) {
    cout<<K<<endl;
  }
  else {
    cout<<H<<endl;
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:10:10: error: expected ';' before 'H'
   10 |   K = A*B
      |          ^
      |          ;
   11 |   H = C*D
      |   ~       
a.cc:15:3: error: 'else' without a previous 'if'
   15 |   else {
      |   ^~~~
Language: C++

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

int main() {
  int A,B,C,D;
  cin >> A >> B;
  cin >> C >> D;
  K = A*B
  H = C*D
  if (K >= H) {
    cout<<K<<endl;
  }
  else{
    cout<<H<<endl;
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:3: error: 'K' was not declared in this scope
    8 |   K = A*B
      |   ^
a.cc:13:3: error: 'else' without a previous 'if'
   13 |   else{
      |   ^~~~
a.cc:14:11: error: 'H' was not declared in this scope
   14 |     cout<<H<<endl;
      |           ^
Language: C++

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

int main() {
  cin >> A >> B;
  cin >> C >> D;
  K = A*B
  H = C*D
  if (K >= H) {
    cout<<K<<endl;
  }
  else{
    cout<<H<<endl;
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:5:10: error: 'A' was not declared in this scope
    5 |   cin >> A >> B;
      |          ^
a.cc:5:15: error: 'B' was not declared in this scope
    5 |   cin >> A >> B;
      |               ^
a.cc:6:10: error: 'C' was not declared in this scope
    6 |   cin >> C >> D;
      |          ^
a.cc:6:15: error: 'D' was not declared in this scope
    6 |   cin >> C >> D;
      |               ^
a.cc:7:3: error: 'K' was not declared in this scope
    7 |   K = A*B
      |   ^
a.cc:12:3: error: 'else' without a previous 'if'
   12 |   else{
      |   ^~~~
a.cc:13:11: error: 'H' was not declared in this scope
   13 |     cout<<H<<endl;
      |           ^
Language: C++


using namespace std;
int main(){
	int A,B,C,D,rectangle1,rectangle2;
	//Vertical side length of rectangle1
	cin >> A;
	// Horizontal side length of rectangle1
	cin >>  B;
	//Vertical side length of rectangle2
	cin >> C;
	// Horizontal side length of rectangle2
	cin >>  D;
	rectangle1 = A*B;
	rectangle2 = C*D;
	if( rectangle1 >= rectangle2 ){
		cout << rectangle1<<endl;
		
	}
	else if(rectangle2 >= rectangle1 ){
		cout << rectangle2 << endl;
	}
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:9: error: 'cin' was not declared in this scope
    6 |         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 | 
a.cc:16:17: error: 'cout' was not declared in this scope
   16 |                 cout << rectangle1<<endl;
      |                 ^~~~
a.cc:16:17: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:16:37: error: 'endl' was not declared in this scope
   16 |                 cout << rectangle1<<endl;
      |                                     ^~~~
a.cc:1:1: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
  +++ |+#include <ostream>
    1 | 
a.cc:20:17: error: 'cout' was not declared in this scope
   20 |                 cout << rectangle2 << endl;
      |                 ^~~~
a.cc:20:17: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:20:39: error: 'endl' was not declared in this scope
   20 |                 cout << rectangle2 << endl;
      |                                       ^~~~
a.cc:20:39: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
Language: C++

#include<cstdio>
using namespace std;
int array[200005]={0};
int main(){
  int a,b,c,d;
  cin>>a>>b>>c>>d;
  cout<<max(a*b,c*d)<<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:3: error: 'cin' was not declared in this scope
    6 |   cin>>a>>b>>c>>d;
      |   ^~~
a.cc:2:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
    1 | #include<cstdio>
  +++ |+#include <iostream>
    2 | using namespace std;
a.cc:7:3: error: 'cout' was not declared in this scope
    7 |   cout<<max(a*b,c*d)<<endl;
      |   ^~~~
a.cc:7:3: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:7:9: error: 'max' was not declared in this scope
    7 |   cout<<max(a*b,c*d)<<endl;
      |         ^~~
a.cc:7:23: error: 'endl' was not declared in this scope
    7 |   cout<<max(a*b,c*d)<<endl;
      |                       ^~~~
a.cc:2:1: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
    1 | #include<cstdio>
  +++ |+#include <ostream>
    2 | using namespace std;
Language: C++

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

int main(){
  int a,b,c,d,area1,area2;
  cin>>a>>b>>c>>d;
  areai=a*b;
  area2=c*d;
  if(area1>area2){
    cout<<area1;
  }else{
    cout<<area2;
  }
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:3: error: 'areai' was not declared in this scope; did you mean 'area2'?
    7 |   areai=a*b;
      |   ^~~~~
      |   area2
Language: C++

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

int main() {
  int A, B;
  cin >> A >> B >> C >> D;
  if (A*B>=C*D){
    cout << A*B << endl;
  }
  else{
    cout << C*D << 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 >> D;
      |                    ^
a.cc:6:25: error: 'D' was not declared in this scope
    6 |   cin >> A >> B >> C >> D;
      |                         ^
Language: C++

#include <iostream>
using namespace std;

int main()
{
	longlong a,b,c,d,e,f;
	cin >> a;
	cin >> b;
	cin >> c;
	cin >> d;

	e = a*b;
	f = c*d;

	if (e>f) {
		cout << f << "\n";
	} else if (e=f) {
		cout << e << "\n";
	} else {
		cout << e << "\n";
	}

	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:9: error: 'longlong' was not declared in this scope
    6 |         longlong a,b,c,d,e,f;
      |         ^~~~~~~~
a.cc:7:16: error: 'a' was not declared in this scope
    7 |         cin >> a;
      |                ^
a.cc:8:16: error: 'b' was not declared in this scope
    8 |         cin >> b;
      |                ^
a.cc:9:16: error: 'c' was not declared in this scope
    9 |         cin >> c;
      |                ^
a.cc:10:16: error: 'd' was not declared in this scope
   10 |         cin >> d;
      |                ^
a.cc:12:9: error: 'e' was not declared in this scope
   12 |         e = a*b;
      |         ^
a.cc:13:9: error: 'f' was not declared in this scope
   13 |         f = c*d;
      |         ^
Language: C++

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

int main(int argc, char const *argv[])
{
	int a,b,c,d;
	cin >> a >> b >> c >> d;
	if(a * b < c * d)	cout << c * d << endl;
	else coud << a * b << endl;
	return 0;
}


Compiler output:
a.cc: In function 'int main(int, const char**)':
a.cc:9:14: error: 'coud' was not declared in this scope
    9 |         else coud << a * b << endl;
      |              ^~~~
Language: C++

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

int main(){
    cin >> a >> b >> c >> d;
    cout << max(a*b, c*d);
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:12: error: 'a' was not declared in this scope
    5 |     cin >> a >> b >> c >> d;
      |            ^
a.cc:5:17: error: 'b' was not declared in this scope
    5 |     cin >> a >> b >> c >> d;
      |                 ^
a.cc:5:22: error: 'c' was not declared in this scope
    5 |     cin >> a >> b >> c >> d;
      |                      ^
a.cc:5:27: error: 'd' was not declared in this scope
    5 |     cin >> a >> b >> c >> d;
      |                           ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main () {
	int A, B, C, D;
    cin >> A >> B >> C >> D;
  
    int s = A*B, t = C*D;
    cin >> s >> t;
  
    int ans = max(a,b);
    cout << ans << endl;
  
    if ( a == b ) {
      cout << a << endl;
    }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:19: error: 'a' was not declared in this scope
   11 |     int ans = max(a,b);
      |                   ^
a.cc:11:21: error: 'b' was not declared in this scope
   11 |     int ans = max(a,b);
      |                     ^
Language: C++

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

int main () {
	int A, B, C, D;
    cin >> A >> B >> C >> D;
  
    int s = A*B, t = C*D;
    cin >> s >> t;
  
    int ans = max(a,b);
    cout << ans << endl;
  
    if ( a == b ) {
      cout << a << endl;
    }

Compiler output:
a.cc: In function 'int main()':
a.cc:11:19: error: 'a' was not declared in this scope
   11 |     int ans = max(a,b);
      |                   ^
a.cc:11:21: error: 'b' was not declared in this scope
   11 |     int ans = max(a,b);
      |                     ^
a.cc:16:6: error: expected '}' at end of input
   16 |     }
      |      ^
a.cc:4:13: note: to match this '{'
    4 | int main () {
      |             ^
Language: Java

import java.util.*;
public class Main{
	public static void main(String[]args){
    	Scanner sc=new Scanner(System.in);
        int a=sc.nextInt();int b=sc.nextInt();int c=sc.nextInt();int d=sc.nextInt();
        System.out.println(math.max(a*b,c*d));
    }
}


Compiler output:
Main.java:6: error: cannot find symbol
        System.out.println(math.max(a*b,c*d));
                           ^
  symbol:   variable math
  location: class Main
1 error
Language: C++

#include <cstdlib>
#include <iostream>
using namescape std;
int main(){
  int a,b,c,d;
  scanf("%d %d %d %d",&a,&b,&c,&d);
  if(a*b > c*d) cout << a*b;
  else cout << c*d;
}


Compiler output:
a.cc:3:7: error: expected nested-name-specifier before 'namescape'
    3 | using namescape std;
      |       ^~~~~~~~~
a.cc: In function 'int main()':
a.cc:7:17: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    7 |   if(a*b > c*d) cout << a*b;
      |                 ^~~~
      |                 std::cout
In file included from a.cc:2:
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:8:8: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    8 |   else cout << c*d;
      |        ^~~~
      |        std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~