View Compilation Error

0_0_20893477_21455.c: In function 'main':
0_0_20893477_21455.c:28:2: error: expected expression before '/' token
  //printf("%d", loop);
  ^
0_0_20893477_21455.c:39:4: error: expected expression before '/' token
    //printf("%c", c);
    ^