View Compilation Error

0_0_19547575_19382.c: In function 'main':
0_0_19547575_19382.c:17:2: error: expected expression before '/' token
  // flag=0;
  ^
0_0_19547575_19382.c:19:2: error: expected expression before '/' token
  // printf("c=%d\n",c);
  ^