View Compilation Error

0_0_17400959_23955.c: In function 'main':
0_0_17400959_23955.c:28:12: error: expected expression before '/' token
            // printf("%d=====%d====%d\n",x,y,fun(x,y));
            ^
0_0_17400959_23955.c:33:11: error: expected expression before '/' token
           //  printf("%d=====%d====%d\n",x,y,fun(x,y));
           ^
0_0_17400959_23955.c:37:19: error: expected expression before '/' token
                   // printf("%d=====%d====%d\n",x,y,fun(x,y));
                   ^