Language: C++

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


int main(){
  int pop;
  cin>> pop;
  
  if( pop == Q||W||E||R||T||Y||U||I||O||P||A||S||D||F||G||H||J||K||L||Z||X||C||V||B||N||M){
    cout<< "A" <<endl;
  }
  if( pop == q||w||e||r||t||y||u||i||o||p||a||s||d||f||g||h||j||k||l||z||x||c||v||b||n||m){
    cout<< "a" <<endl;
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:14: error: 'Q' was not declared in this scope
    9 |   if( pop == Q||W||E||R||T||Y||U||I||O||P||A||S||D||F||G||H||J||K||L||Z||X||C||V||B||N||M){
      |              ^
a.cc:9:17: error: 'W' was not declared in this scope
    9 |   if( pop == Q||W||E||R||T||Y||U||I||O||P||A||S||D||F||G||H||J||K||L||Z||X||C||V||B||N||M){
      |                 ^
a.cc:9:20: error: 'E' was not declared in this scope
    9 |   if( pop == Q||W||E||R||T||Y||U||I||O||P||A||S||D||F||G||H||J||K||L||Z||X||C||V||B||N||M){
      |                    ^
a.cc:9:23: error: 'R' was not declared in this scope
    9 |   if( pop == Q||W||E||R||T||Y||U||I||O||P||A||S||D||F||G||H||J||K||L||Z||X||C||V||B||N||M){
      |                       ^
a.cc:9:26: error: 'T' was not declared in this scope
    9 |   if( pop == Q||W||E||R||T||Y||U||I||O||P||A||S||D||F||G||H||J||K||L||Z||X||C||V||B||N||M){
      |                          ^
a.cc:9:29: error: 'Y' was not declared in this scope
    9 |   if( pop == Q||W||E||R||T||Y||U||I||O||P||A||S||D||F||G||H||J||K||L||Z||X||C||V||B||N||M){
      |                             ^
a.cc:9:32: error: 'U' was not declared in this scope
    9 |   if( pop == Q||W||E||R||T||Y||U||I||O||P||A||S||D||F||G||H||J||K||L||Z||X||C||V||B||N||M){
      |                                ^
a.cc:9:35: error: 'I' was not declared in this scope
    9 |   if( pop == Q||W||E||R||T||Y||U||I||O||P||A||S||D||F||G||H||J||K||L||Z||X||C||V||B||N||M){
      |                                   ^
a.cc:9:38: error: 'O' was not declared in this scope
    9 |   if( pop == Q||W||E||R||T||Y||U||I||O||P||A||S||D||F||G||H||J||K||L||Z||X||C||V||B||N||M){
      |                                      ^
a.cc:9:41: error: 'P' was not declared in this scope
    9 |   if( pop == Q||W||E||R||T||Y||U||I||O||P||A||S||D||F||G||H||J||K||L||Z||X||C||V||B||N||M){
      |                                         ^
a.cc:9:44: error: 'A' was not declared in this scope
    9 |   if( pop == Q||W||E||R||T||Y||U||I||O||P||A||S||D||F||G||H||J||K||L||Z||X||C||V||B||N||M){
      |                                            ^
a.cc:9:47: error: 'S' was not declared in this scope
    9 |   if( pop == Q||W||E||R||T||Y||U||I||O||P||A||S||D||F||G||H||J||K||L||Z||X||C||V||B||N||M){
      |                                               ^
a.cc:9:50: error: 'D' was not declared in this scope
    9 |   if( pop == Q||W||E||R||T||Y||U||I||O||P||A||S||D||F||G||H||J||K||L||Z||X||C||V||B||N||M){
      |                                                  ^
a.cc:9:53: error: 'F' was not declared in this scope
    9 |   if( pop == Q||W||E||R||T||Y||U||I||O||P||A||S||D||F||G||H||J||K||L||Z||X||C||V||B||N||M){
      |                                                     ^
a.cc:9:56: error: 'G' was not declared in this scope
    9 |   if( pop == Q||W||E||R||T||Y||U||I||O||P||A||S||D||F||G||H||J||K||L||Z||X||C||V||B||N||M){
      |                                                        ^
a.cc:9:59: error: 'H' was not declared in this scope
    9 |   if( pop == Q||W||E||R||T||Y||U||I||O||P||A||S||D||F||G||H||J||K||L||Z||X||C||V||B||N||M){
      |                                                           ^
a.cc:9:62: error: 'J' was not declared in this scope
    9 |   if( pop == Q||W||E||R||T||Y||U||I||O||P||A||S||D||F||G||H||J||K||L||Z||X||C||V||B||N||M){
      |                                                              ^
a.cc:9:65: error: 'K' was not declared in this scope
    9 |   if( pop == Q||W||E||R||T||Y||U||I||O||P||A||S||D||F||G||H||J||K||L||Z||X||C||V||B||N||M){
      |                                                                 ^
a.cc:9:68: error: 'L' was not declared in this scope
    9 |   if( pop == Q||W||E||R||T||Y||U||I||O||P||A||S||D||F||G||H||J||K||L||Z||X||C||V||B||N||M){
      |                                                                    ^
a.cc:9:71: error: 'Z' was not declared in this scope
    9 |   if( pop == Q||W||E||R||T||Y||U||I||O||P||A||S||D||F||G||H||J||K||L||Z||X||C||V||B||N||M){
      |                                                                       ^
a.cc:9:74: error: 'X' was not declared in this scope
    9 |   if( pop == Q||W||E||R||T||Y||U||I||O||P||A||S||D||F||G||H||J||K||L||Z||X||C||V||B||N||M){
      |                                                                          ^
a.cc:9:77: error: 'C' was not declared in this scope
    9 |   if( pop == Q||W||E||R||T||Y||U||I||O||P||A||S||D||F||G||H||J||K||L||Z||X||C||V||B||N||M){
      |                                                                             ^
a.cc:9:80: error: 'V' was not declared in this scope
    9 |   if( pop == Q||W||E||R||T||Y||U||I||O||P||A||S||D||F||G||H||J||K||L||Z||X||C||V||B||N||M){
      |                                                                                ^
a.cc:9:83: error: 'B' was not declared in this scope
    9 |   if( pop == Q||W||E||R||T||Y||U||I||O||P||A||S||D||F||G||H||J||K||L||Z||X||C||V||B||N||M){
      |                                                                                   ^
a.cc:9:86: error: 'N' was not declared in this scope
    9 |   if( pop == Q||W||E||R||T||Y||U||I||O||P||A||S||D||F||G||H||J||K||L||Z||X||C||V||B||N||M){
      |                                                                                      ^
a.cc:9:89: error: 'M' was not declared in this scope
    9 |   if( pop == Q||W||E||R||T||Y||U||I||O||P||A||S||D||F||G||H||J||K||L||Z||X||C||V||B||N||M){
      |                                                                                         ^
a.cc:12:14: error: 'q' was not declared in this scope
   12 |   if( pop == q||w||e||r||t||y||u||i||o||p||a||s||d||f||g||h||j||k||l||z||x||c||v||b||n||m){
      |              ^
a.cc:12:17: error: 'w' was not declared in this scope
   12 |   if( pop == q||w||e||r||t||y||u||i||o||p||a||s||d||f||g||h||j||k||l||z||x||c||v||b||n||m){
      |                 ^
a.cc:12:20: error: 'e' was not declared in this scope
   12 |   if( pop == q||w||e||r||t||y||u||i||o||p||a||s||d||f||g||h||j||k||l||z||x||c||v||b||n||m){
      |                    ^
a.cc:12:23: error: 'r' was not declared in this scope
   12 |   if( pop == q||w||e||r||t||y||u||i||o||p||a||s||d||f||g||h||j||k||l||z||x||c||v||b||n||m){
      |                       ^
a.cc:12:26: error: 't' was not declared in this scope; did you mean 'tm'?
   12 |   if( pop == q||w||e||r||t||y||u||i||o||p||a||s||d||f||g||h||j||k||l||z||x||c||v||b||n||m){
      |                          ^
      |                          tm
a.cc:12:29: error: 'y' was not declared in this scope; did you mean 'yn'?
   12 |   if( pop == q||w||e||r||t||y||u||i||o||p||a||s||d||f||g||h||j||k||l||z||x||c||v||b||n||m){
      |                             ^
      |                             yn
a.cc:12:32: error: 'u' was not declared in this scope
   12 |   if( pop == q||w||e||r||t||y||u||i||o||p||a||s||d||f||g||h||j||k||l||z||x||c||v||b||n||m){
      |                                ^
a.cc:12:35: error: 'i' was not declared in this scope
   12 |   if( pop == q||w||e||r||t||y||u||i||o||p||a||s||d||f||g||h||j||k||l||z||x||c||v||b||n||m){
      |                                   ^
a.cc:12:38: error: 'o' was not declared in this scope
   12 |   if( pop == q||w||e||r||t||y||u||i||o||p||a||s||d||f||g||h||j||k||l||z||x||c||v||b||n||m){
      |                                      ^
a.cc:12:41: error: 'p' was not declared in this scope
   12 |   if( pop == q||w||e||r||t||y||u||i||o||p||a||s||d||f||g||h||j||k||l||z||x||c||v||b||n||m){
      |                                         ^
a.cc:12:44: error: 'a' was not declared in this scope
   12 |   if( pop == q||w||e||r||t||y||u||i||o||p||a||s||d||f||g||h||j||k||l||z||x||c||v||b||n||m){
      |                                            ^
a.cc:12:47: error: 's' was not declared in this scope
   12 |   if( pop == q||w||e||r||t||y||u||i||o||p||a||s||d||f||g||h||j||k||l||z||x||c||v||b||n||m){
      |                                               ^
a.cc:12:50: error: 'd' was not declared in this scope
   12 |   if( pop == q||w||e||r||t||y||u||i||o||p||a||s||d||f||g||h||j||k||l||z||x||c||v||b||n||m){
      |                                                  ^
a.cc:12:53: error: 'f' was not declared in this scope
   12 |   if( pop == q||w||e||r||t||y||u||i||o||p||a||s||d||f||g||h||j||k||l||z||x||c||v||b||n||m){
      |                                                     ^
a.cc:12:56: error: 'g' was not declared in this scope
   12 |   if( pop == q||w||e||r||t||y||u||i||o||p||a||s||d||f||g||h||j||k||l||z||x||c||v||b||n||m){
      |                                                        ^
a.cc:12:59: error: 'h' was not declared in this scope
   12 |   if( pop == q||w||e||r||t||y||u||i||o||p||a||s||d||f||g||h||j||k||l||z||x||c||v||b||n||m){
      |                                                           ^
a.cc:12:62: error: 'j' was not declared in this scope; did you mean 'jn'?
   12 |   if( pop == q||w||e||r||t||y||u||i||o||p||a||s||d||f||g||h||j||k||l||z||x||c||v||b||n||m){
      |                                                              ^
      |                                                              jn
a.cc:12:65: error: 'k' was not declared in this scope
   12 |   if( pop == q||w||e||r||t||y||u||i||o||p||a||s||d||f||g||h||j||k||l||z||x||c||v||b||n||m){
      |                                                                 ^
a.cc:12:68: error: 'l' was not declared in this scope
   12 |   if( pop == q||w||e||r||t||y||u||i||o||p||a||s||d||f||g||h||j||k||l||z||x||c||v||b||n||m){
      |                                                                    ^
a.cc:12:71: error: 'z' was not declared in this scope
   12 |   if( pop == q||w||e||r||t||y||u||i||o||p||a||s||d||f||g||h||j||k||l||z||x||c||v||b||n||m){
      |                                                                       ^
a.cc:12:74: error: 'x' was not declared in this scope
   12 |   if( pop == q||w||e||r||t||y||u||i||o||p||a||s||d||f||g||h||j||k||l||z||x||c||v||b||n||m){
      |                                                                          ^
a.cc:12:77: error: 'c' was not declared in this scope
   12 |   if( pop == q||w||e||r||t||y||u||i||o||p|