Language: C++

#include <iostream>
using namespace std;
int main()
{
?? ?? int count = 0;
?? ?? while (count < 10000) {
?? ?? ?? ?? int x;
?? ?? ?? ?? cin >> x;
?? ?? ?? ?? if (x == 0) break;
?? ?? ?? ?? count++;
?? ?? ?? ?? cout << "Case " << count << ": " << x << endl;
?? ?? }
?? ?? return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:1: error: expected primary-expression before '?' token
    5 | ?? ?? int count = 0;
      | ^
a.cc:5:2: error: expected primary-expression before '?' token
    5 | ?? ?? int count = 0;
      |  ^
a.cc:5:4: error: expected primary-expression before '?' token
    5 | ?? ?? int count = 0;
      |    ^
a.cc:5:5: error: expected primary-expression before '?' token
    5 | ?? ?? int count = 0;
      |     ^
a.cc:5:7: error: expected primary-expression before 'int'
    5 | ?? ?? int count = 0;
      |       ^~~
a.cc:5:6: error: expected ':' before 'int'
    5 | ?? ?? int count = 0;
      |      ^~~~
      |      :
a.cc:5:7: error: expected primary-expression before 'int'
    5 | ?? ?? int count = 0;
      |       ^~~
a.cc:5:6: error: expected ':' before 'int'
    5 | ?? ?? int count = 0;
      |      ^~~~
      |      :
a.cc:5:7: error: expected primary-expression before 'int'
    5 | ?? ?? int count = 0;
      |       ^~~
a.cc:5:6: error: expected ':' before 'int'
    5 | ?? ?? int count = 0;
      |      ^~~~
      |      :
a.cc:5:7: error: expected primary-expression before 'int'
    5 | ?? ?? int count = 0;
      |       ^~~
a.cc:5:6: error: expected ':' before 'int'
    5 | ?? ?? int count = 0;
      |      ^~~~
      |      :
a.cc:5:7: error: expected primary-expression before 'int'
    5 | ?? ?? int count = 0;
      |       ^~~
a.cc:6:1: error: expected primary-expression before '?' token
    6 | ?? ?? while (count < 10000) {
      | ^
a.cc:6:2: error: expected primary-expression before '?' token
    6 | ?? ?? while (count < 10000) {
      |  ^
a.cc:6:4: error: expected primary-expression before '?' token
    6 | ?? ?? while (count < 10000) {
      |    ^
a.cc:6:5: error: expected primary-expression before '?' token
    6 | ?? ?? while (count < 10000) {
      |     ^
a.cc:6:7: error: expected primary-expression before 'while'
    6 | ?? ?? while (count < 10000) {
      |       ^~~~~
a.cc:6:6: error: expected ':' before 'while'
    6 | ?? ?? while (count < 10000) {
      |      ^~~~~~
      |      :
a.cc:6:7: error: expected primary-expression before 'while'
    6 | ?? ?? while (count < 10000) {
      |       ^~~~~
a.cc:6:6: error: expected ':' before 'while'
    6 | ?? ?? while (count < 10000) {
      |      ^~~~~~
      |      :
a.cc:6:7: error: expected primary-expression before 'while'
    6 | ?? ?? while (count < 10000) {
      |       ^~~~~
a.cc:6:6: error: expected ':' before 'while'
    6 | ?? ?? while (count < 10000) {
      |      ^~~~~~
      |      :
a.cc:6:7: error: expected primary-expression before 'while'
    6 | ?? ?? while (count < 10000) {
      |       ^~~~~
a.cc:6:6: error: expected ':' before 'while'
    6 | ?? ?? while (count < 10000) {
      |      ^~~~~~
      |      :
a.cc:6:7: error: expected primary-expression before 'while'
    6 | ?? ?? while (count < 10000) {
      |       ^~~~~
a.cc:13:1: error: expected primary-expression before '?' token
   13 | ?? ?? return 0;
      | ^
a.cc:13:2: error: expected primary-expression before '?' token
   13 | ?? ?? return 0;
      |  ^
a.cc:13:4: error: expected primary-expression before '?' token
   13 | ?? ?? return 0;
      |    ^
a.cc:13:5: error: expected primary-expression before '?' token
   13 | ?? ?? return 0;
      |     ^
a.cc:13:7: error: expected primary-expression before 'return'
   13 | ?? ?? return 0;
      |       ^~~~~~
a.cc:13:6: error: expected ':' before 'return'
   13 | ?? ?? return 0;
      |      ^~~~~~~
      |      :
a.cc:13:7: error: expected primary-expression before 'return'
   13 | ?? ?? return 0;
      |       ^~~~~~
a.cc:13:6: error: expected ':' before 'return'
   13 | ?? ?? return 0;
      |      ^~~~~~~
      |      :
a.cc:13:7: error: expected primary-expression before 'return'
   13 | ?? ?? return 0;
      |       ^~~~~~
a.cc:13:6: error: expected ':' before 'return'
   13 | ?? ?? return 0;
      |      ^~~~~~~
      |      :
a.cc:13:7: error: expected primary-expression before 'return'
   13 | ?? ?? return 0;
      |       ^~~~~~
a.cc:13:6: error: expected ':' before 'return'
   13 | ?? ?? return 0;
      |      ^~~~~~~
      |      :
a.cc:13:7: error: expected primary-expression before 'return'
   13 | ?? ?? return 0;
      |       ^~~~~~