Language: C++

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

int main() {
char X, Y;
int x, y;
if(X == A){
	x = 10
}
if(X == B){
	x = 11
}
if(X == C){
	x = 12
}
if(X == D){
	x = 13
}
if(X == E){
	x = 14
}
if(X == F){
	x = 15
}
if(Y == A){
	y = 10
}
if(Y == B){
	y = 11
}
if(Y == C){
	y = 12
}
if(Y == D){
	y = 13
}
if(Y == E){
	y = 14
}
if(Y == F){
	y = 15
}

if(x == y){
	cout << "=" << endl;
}
else if(x < y){
	cout << "<" << endl;
}
else{
	cout << ">" << endl;
}
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:9: error: 'A' was not declared in this scope
    7 | if(X == A){
      |         ^
a.cc:8:15: error: expected ';' before '}' token
    8 |         x = 10
      |               ^
      |               ;
    9 | }
      | ~              
a.cc:10:9: error: 'B' was not declared in this scope
   10 | if(X == B){
      |         ^
a.cc:11:15: error: expected ';' before '}' token
   11 |         x = 11
      |               ^
      |               ;
   12 | }
      | ~              
a.cc:13:9: error: 'C' was not declared in this scope
   13 | if(X == C){
      |         ^
a.cc:14:15: error: expected ';' before '}' token
   14 |         x = 12
      |               ^
      |               ;
   15 | }
      | ~              
a.cc:16:9: error: 'D' was not declared in this scope
   16 | if(X == D){
      |         ^
a.cc:17:15: error: expected ';' before '}' token
   17 |         x = 13
      |               ^
      |               ;
   18 | }
      | ~              
a.cc:19:9: error: 'E' was not declared in this scope
   19 | if(X == E){
      |         ^
a.cc:20:15: error: expected ';' before '}' token
   20 |         x = 14
      |               ^
      |               ;
   21 | }
      | ~              
a.cc:22:9: error: 'F' was not declared in this scope
   22 | if(X == F){
      |         ^
a.cc:23:15: error: expected ';' before '}' token
   23 |         x = 15
      |               ^
      |               ;
   24 | }
      | ~              
a.cc:25:9: error: 'A' was not declared in this scope
   25 | if(Y == A){
      |         ^
a.cc:26:15: error: expected ';' before '}' token
   26 |         y = 10
      |               ^
      |               ;
   27 | }
      | ~              
a.cc:28:9: error: 'B' was not declared in this scope
   28 | if(Y == B){
      |         ^
a.cc:29:15: error: expected ';' before '}' token
   29 |         y = 11
      |               ^
      |               ;
   30 | }
      | ~              
a.cc:31:9: error: 'C' was not declared in this scope
   31 | if(Y == C){
      |         ^
a.cc:32:15: error: expected ';' before '}' token
   32 |         y = 12
      |               ^
      |               ;
   33 | }
      | ~              
a.cc:34:9: error: 'D' was not declared in this scope
   34 | if(Y == D){
      |         ^
a.cc:35:15: error: expected ';' before '}' token
   35 |         y = 13
      |               ^
      |               ;
   36 | }
      | ~              
a.cc:37:9: error: 'E' was not declared in this scope
   37 | if(Y == E){
      |         ^
a.cc:38:15: error: expected ';' before '}' token
   38 |         y = 14
      |               ^
      |               ;
   39 | }
      | ~              
a.cc:40:9: error: 'F' was not declared in this scope
   40 | if(Y == F){
      |         ^
a.cc:41:15: error: expected ';' before '}' token
   41 |         y = 15
      |               ^
      |               ;
   42 | }
      | ~