Language: C++

#include<bits/stdc++.h>
using namespace std;
int main()
{
　int x,y,num;
　while(cin>>x>>y,x&&y){
　　if(x<y)swap(x,y);
　　for(int i=1;;i++){
　　　num=x%y;
　　　x=y;
　　　y=num;
　　　if(!num){
　　　　cout<<x<<" "<<i<<endl;
　　　　break;
　　　}
　　}
　}
}


Compiler output:
a.cc:5:1: error: extended character 　 is not valid in an identifier
    5 | 　int x,y,num;
      | ^
a.cc:6:1: error: extended character 　 is not valid in an identifier
    6 | 　while(cin>>x>>y,x&&y){
      | ^
a.cc:7:1: error: extended character 　 is not valid in an identifier
    7 | 　　if(x<y)swap(x,y);
      | ^
a.cc:7:1: error: extended character 　 is not valid in an identifier
a.cc:8:1: error: extended character 　 is not valid in an identifier
    8 | 　　for(int i=1;;i++){
      | ^
a.cc:8:1: error: extended character 　 is not valid in an identifier
a.cc:9:1: error: extended character 　 is not valid in an identifier
    9 | 　　　num=x%y;
      | ^
a.cc:9:1: error: extended character 　 is not valid in an identifier
a.cc:9:1: error: extended character 　 is not valid in an identifier
a.cc:10:1: error: extended character 　 is not valid in an identifier
   10 | 　　　x=y;
      | ^
a.cc:10:1: error: extended character 　 is not valid in an identifier
a.cc:10:1: error: extended character 　 is not valid in an identifier
a.cc:11:1: error: extended character 　 is not valid in an identifier
   11 | 　　　y=num;
      | ^
a.cc:11:1: error: extended character 　 is not valid in an identifier
a.cc:11:1: error: extended character 　 is not valid in an identifier
a.cc:12:1: error: extended character 　 is not valid in an identifier
   12 | 　　　if(!num){
      | ^
a.cc:12:1: error: extended character 　 is not valid in an identifier
a.cc:12:1: error: extended character 　 is not valid in an identifier
a.cc:13:1: error: extended character 　 is not valid in an identifier
   13 | 　　　　cout<<x<<" "<<i<<endl;
      | ^
a.cc:13:1: error: extended character 　 is not valid in an identifier
a.cc:13:1: error: extended character 　 is not valid in an identifier
a.cc:13:1: error: extended character 　 is not valid in an identifier
a.cc:14:1: error: extended character 　 is not valid in an identifier
   14 | 　　　　break;
      | ^
a.cc:14:1: error: extended character 　 is not valid in an identifier
a.cc:14:1: error: extended character 　 is not valid in an identifier
a.cc:14:1: error: extended character 　 is not valid in an identifier
a.cc:15:1: error: extended character 　 is not valid in an identifier
   15 | 　　　}
      | ^
a.cc:15:1: error: extended character 　 is not valid in an identifier
a.cc:15:1: error: extended character 　 is not valid in an identifier
a.cc:16:1: error: extended character 　 is not valid in an identifier
   16 | 　　}
      | ^
a.cc:16:1: error: extended character 　 is not valid in an identifier
a.cc:17:1: error: extended character 　 is not valid in an identifier
   17 | 　}
      | ^
a.cc: In function 'int main()':
a.cc:5:1: error: '\U00003000int' was not declared in this scope
    5 | 　int x,y,num;
      | ^~~~~
a.cc:6:14: error: 'x' was not declared in this scope
    6 | 　while(cin>>x>>y,x&&y){
      |              ^
a.cc:6:17: error: 'y' was not declared in this scope; did you mean 'yn'?
    6 | 　while(cin>>x>>y,x&&y){
      |                 ^
      |                 yn
a.cc:6:1: error: '\U00003000while' was not declared in this scope
    6 | 　while(cin>>x>>y,x&&y){
      | ^~~~~~~