View Compilation Error

0_0_20376877_12785.c: In function 'find':
0_0_20376877_12785.c:7:2: error: expected expression before '/' token
  //printf("a=%s b=%s pos=%d\n",a,b,start_pos);
  ^
0_0_20376877_12785.c:11:4: error: expected expression before '/' token
    //printf("compare a[%d]=%c b[%d]=%c\n",i+j,a[i+j],j,b[j]);
    ^
0_0_20376877_12785.c:14:3: error: expected expression before '/' token
   //printf("found=%d\n",found);
   ^
0_0_20376877_12785.c: In function 'main':
0_0_20376877_12785.c:28:4: error: expected expression before '/' token
    //printf("pos=%d\n",pos);
    ^