Language: C++

#include <stdio.h>
int main (void)
{
    int a , b;
 
    scanf("%d %d",&a,&b);/*1 2???????????????????????????????????§%d,%d??§???????????????????????¨1,2??£???????????\????????????*/
     
    printf("%d " , a * b);/*???????????????????????????????????£?????????????????????????????¨?????????1??¨4??????14??£?????¨?????????????????????*/
    printf("%d\n" , 2 * (a + b));
    /+????????????printf("%d %d\n",a+b,2*(a+b));??§?????£?§£*/
 
    return 0;
}

Compiler output:
a.cc:10:51: error: extended character § is not valid in an identifier
   10 |     /+????????????printf("%d %d\n",a+b,2*(a+b));??§?????£?§£*/
      |                                                   ^
a.cc:10:57: error: extended character £ is not valid in an identifier
   10 |     /+????????????printf("%d %d\n",a+b,2*(a+b));??§?????£?§£*/
      |                                                         ^
a.cc:10:59: error: extended character § is not valid in an identifier
   10 |     /+????????????printf("%d %d\n",a+b,2*(a+b));??§?????£?§£*/
      |                                                           ^
a.cc:10:59: error: extended character £ is not valid in an identifier
a.cc: In function 'int main()':
a.cc:10:5: error: expected primary-expression before '/' token
   10 |     /+????????????printf("%d %d\n",a+b,2*(a+b));??§?????£?§£*/
      |     ^
a.cc:10:7: error: expected primary-expression before '?' token
   10 |     /+????????????printf("%d %d\n",a+b,2*(a+b));??§?????£?§£*/
      |       ^
a.cc:10:8: error: expected primary-expression before '?' token
   10 |     /+????????????printf("%d %d\n",a+b,2*(a+b));??§?????£?§£*/
      |        ^
a.cc:10:9: error: expected primary-expression before '?' token
   10 |     /+????????????printf("%d %d\n",a+b,2*(a+b));??§?????£?§£*/
      |         ^
a.cc:10:10: error: expected primary-expression before '?' token
   10 |     /+????????????printf("%d %d\n",a+b,2*(a+b));??§?????£?§£*/
      |          ^
a.cc:10:11: error: expected primary-expression before '?' token
   10 |     /+????????????printf("%d %d\n",a+b,2*(a+b));??§?????£?§£*/
      |           ^
a.cc:10:12: error: expected primary-expression before '?' token
   10 |     /+????????????printf("%d %d\n",a+b,2*(a+b));??§?????£?§£*/
      |            ^
a.cc:10:13: error: expected primary-expression before '?' token
   10 |     /+????????????printf("%d %d\n",a+b,2*(a+b));??§?????£?§£*/
      |             ^
a.cc:10:14: error: expected primary-expression before '?' token
   10 |     /+????????????printf("%d %d\n",a+b,2*(a+b));??§?????£?§£*/
      |              ^
a.cc:10:15: error: expected primary-expression before '?' token
   10 |     /+????????????printf("%d %d\n",a+b,2*(a+b));??§?????£?§£*/
      |               ^
a.cc:10:16: error: expected primary-expression before '?' token
   10 |     /+????????????printf("%d %d\n",a+b,2*(a+b));??§?????£?§£*/
      |                ^
a.cc:10:17: error: expected primary-expression before '?' token
   10 |     /+????????????printf("%d %d\n",a+b,2*(a+b));??§?????£?§£*/
      |                 ^
a.cc:10:18: error: expected primary-expression before '?' token
   10 |     /+????????????printf("%d %d\n",a+b,2*(a+b));??§?????£?§£*/
      |                  ^
a.cc:10:48: error: expected ':' before ';' token
   10 |     /+????????????printf("%d %d\n",a+b,2*(a+b));??§?????£?§£*/
      |                                                ^
      |                                                :
a.cc:10:48: error: expected primary-expression before ';' token
a.cc:10:48: error: expected ':' before ';' token
   10 |     /+????????????printf("%d %d\n",a+b,2*(a+b));??§?????£?§£*/
      |                                                ^
      |                                                :
a.cc:10:48: error: expected primary-expression before ';' token
a.cc:10:48: error: expected ':' before ';' token
   10 |     /+????????????printf("%d %d\n",a+b,2*(a+b));??§?????£?§£*/
      |                                                ^
      |                                                :
a.cc:10:48: error: expected primary-expression before ';' token
a.cc:10:48: error: expected ':' before ';' token
   10 |     /+????????????printf("%d %d\n",a+b,2*(a+b));??§?????£?§£*/
      |                                                ^
      |                                                :
a.cc:10:48: error: expected primary-expression before ';' token
a.cc:10:48: error: expected ':' before ';' token
   10 |     /+????????????printf("%d %d\n",a+b,2*(a+b));??§?????£?§£*/
      |                                                ^
      |                                                :
a.cc:10:48: error: expected primary-expression before ';' token
a.cc:10:48: error: expected ':' before ';' token
   10 |     /+????????????printf("%d %d\n",a+b,2*(a+b));??§?????£?§£*/
      |                                                ^
      |                                                :
a.cc:10:48: error: expected primary-expression before ';' token
a.cc:10:48: error: expected ':' before ';' token
   10 |     /+????????????printf("%d %d\n",a+b,2*(a+b));??§?????£?§£*/
      |                                                ^
      |                                                :
a.cc:10:48: error: expected primary-expression before ';' token
a.cc:10:48: error: expected ':' before ';' token
   10 |     /+????????????printf("%d %d\n",a+b,2*(a+b));??§?????£?§£*/
      |                                                ^
      |                                                :
a.cc:10:48: error: expected primary-expression before ';' token
a.cc:10:48: error: expected ':' before ';' token
   10 |     /+????????????printf("%d %d\n",a+b,2*(a+b));??§?????£?§£*/
      |                                                ^
      |                                                :
a.cc:10:48: error: expected primary-expression before ';' token
a.cc:10:48: error: expected ':' before ';' token
   10 |     /+????????????printf("%d %d\n",a+b,2*(a+b));??§?????£?§£*/
      |                                                ^
      |                                                :
a.cc:10:48: error: expected primary-expression before ';' token
a.cc:10:48: error: expected ':' before ';' token
   10 |     /+????????????printf("%d %d\n",a+b,2*(a+b));??§?????£?§£*/
      |                                                ^
      |                                                :
a.cc:10:48: error: expected primary-expression before ';' token
a.cc:10:48: error: expected ':' before ';' token
   10 |     /+????????????printf("%d %d\n",a+b,2*(a+b));??§?????£?§£*/
      |                                                ^
      |                                                :
a.cc:10:48: error: expected primary-expression before ';' token
a.cc:10:49: error: expected primary-expression before '?' token
   10 |     /+????????????printf("%d %d\n",a+b,2*(a+b));??§?????£?§£*/
      |                                                 ^
a.cc:10:50: error: expected primary-expression before '?' token
   10 |     /+????????????printf("%d %d\n",a+b,2*(a+b));??§?????£?§£*/
      |                                                  ^
a.cc:10:51: error: '\U000000a7' was not declared in this scope
   10 |     /+????????????printf("%d %d\n",a+b,2*(a+b));??§?????£?§£*/
      |                                                   ^
a.cc:10:53: error: expected primary-expression before '?' token
   10 |     /+????????????printf("%d %d\n",a+b,2*(a+b));??§?????£?§£*/
      |                                                     ^
a.cc:10:54: error: expected primary-expression before '?' token
   10 |     /+????????????printf("%d %d\n",a+b,2*(a+b));??§?????£?§£*/
      |                                                      ^
a.cc:10:55: error: expected primary-expression before '?' token
   10 |     /+????????????printf("%d %d\n",a+b,2*(a+b));??§?????£?§£*/
      |                                                       ^
a.cc:10:56: error: expected primary-expression before '?' token
   10 |     /+????????????printf("%d %d\n",a+b,2*(a+b));??§?????£?§£*/
      |                                                        ^
a.cc:10:57: error: '\U000000a3' was not declared in this scope
   10 |     /+????????????printf("%d %d\n",a+b,2*(a+b));??§?????£?§£*/
      |                                                         ^
a.cc:10:59: error: '\U000000a7\U000000a3' was not declared in this scope
   10 |     /+????????????printf("%d %d\n",a+b,2*(a+b));??§?????£?§£*/
      |                                                           ^~
a.cc:10:62: error: expected primary-expression before '/' token
   10 |     /+????????????printf("%d %d\n",a+b,2*(a+b));??§?????£?§£*/
      |                                                              ^
a.cc:12:5: error: expected primary-expression before 'return'
   12 |     return 0;
      |     ^~~~~~
a.cc:10:63: error: expected ':' before 'return'
   10 |     /+????????????printf("%d %d\n",a+b,2*(a+b));??§?????£?§£*/
      |                                                               ^
      |                                                               :
   11 | 
   12 |     return 0;
      |     ~~~~~~                                                     
a.cc:12:5: error: expected primary-expression before 'return'
   12 |     return 0;
      |     ^~~~~~
a.cc:10:63: error: expected ':' before 'return'
   10 |     /+????????????printf("%d %d\n",a+b,2*(a+b));??§?????£?§£*/
      |                                                               ^
      |                                                               :
   11 | 
   12 |     return 0;
      |     ~~~~~~                                                     
a.cc:12:5: error: expected primary-expression before 'return'
   12 |     return 0;
      |     ^~~~~~
a.cc:10:63: error: expected ':' before 'return'
   10 |     /+????????????printf("%d %d\n",a+b,2*(a+b));??§?????£?§£*/
      |                                                               ^
      |                                                               :
   11 | 
   12 |     return 0;
      |     ~~~~~~                                                     
a.cc:12:5: error: expected primary-expression before 'return'
   12 |     return 0;
      |     ^~~~~~
a.cc:10:63: error: expected ':' before 'return'
   10 |     /+????????????printf("%d %d\n",a+b,2*(a+b));??§?????£?§£*/
      |                                                               ^
      |