Language: C++


#include<iostream>

using namespace std;

int main(){

int a=0,b=0;

cin >> a >> b; // ???????????°????????\???

if(a < b){
cout << a << "<" << b << endl;  //a?????????b???????????§????????¨???
}

else if(a > b){
cout << a << ">" << b << endl;??????//b?????????a???????????§????????¨???
}

if(a==b){
cout << a << "==" << b << endl;   //a??¨b???????????¨???
}

return 0;

}

Compiler output:
a.cc:17:35: warning: trigraph ??/ ignored, use -trigraphs to enable [-Wtrigraphs]
   17 | cout << a << ">" << b << endl;??????//b?????????a???????????§????????¨???
a.cc: In function 'int main()':
a.cc:17:31: error: expected primary-expression before '?' token
   17 | cout << a << ">" << b << endl;??????//b?????????a???????????§????????¨???
      |                               ^
a.cc:17:32: error: expected primary-expression before '?' token
   17 | cout << a << ">" << b << endl;??????//b?????????a???????????§????????¨???
      |                                ^
a.cc:17:33: error: expected primary-expression before '?' token
   17 | cout << a << ">" << b << endl;??????//b?????????a???????????§????????¨???
      |                                 ^
a.cc:17:34: error: expected primary-expression before '?' token
   17 | cout << a << ">" << b << endl;??????//b?????????a???????????§????????¨???
      |                                  ^
a.cc:17:35: error: expected primary-expression before '?' token
   17 | cout << a << ">" << b << endl;??????//b?????????a???????????§????????¨???
      |                                   ^
a.cc:17:36: error: expected primary-expression before '?' token
   17 | cout << a << ">" << b << endl;??????//b?????????a???????????§????????¨???
      |                                    ^
a.cc:18:1: error: expected primary-expression before '}' token
   18 | }
      | ^
a.cc:17:37: error: expected ':' before '}' token
   17 | cout << a << ">" << b << endl;??????//b?????????a???????????§????????¨???
      |                                     ^
      |                                     :
   18 | }
      | ~                                    
a.cc:18:1: error: expected primary-expression before '}' token
   18 | }
      | ^
a.cc:17:37: error: expected ':' before '}' token
   17 | cout << a << ">" << b << endl;??????//b?????????a???????????§????????¨???
      |                                     ^
      |                                     :
   18 | }
      | ~                                    
a.cc:18:1: error: expected primary-expression before '}' token
   18 | }
      | ^
a.cc:17:37: error: expected ':' before '}' token
   17 | cout << a << ">" << b << endl;??????//b?????????a???????????§????????¨???
      |                                     ^
      |                                     :
   18 | }
      | ~                                    
a.cc:18:1: error: expected primary-expression before '}' token
   18 | }
      | ^
a.cc:17:37: error: expected ':' before '}' token
   17 | cout << a << ">" << b << endl;??????//b?????????a???????????§????????¨???
      |                                     ^
      |                                     :
   18 | }
      | ~                                    
a.cc:18:1: error: expected primary-expression before '}' token
   18 | }
      | ^
a.cc:17:37: error: expected ':' before '}' token
   17 | cout << a << ">" << b << endl;??????//b?????????a???????????§????????¨???
      |                                     ^
      |                                     :
   18 | }
      | ~                                    
a.cc:18:1: error: expected primary-expression before '}' token
   18 | }
      | ^
a.cc:17:37: error: expected ':' before '}' token
   17 | cout << a << ">" << b << endl;??????//b?????????a???????????§????????¨???
      |                                     ^
      |                                     :
   18 | }
      | ~                                    
a.cc:18:1: error: expected primary-expression before '}' token
   18 | }
      | ^