View Compilation Error

0_0_14231936_19655.c: In function 'main':
0_0_14231936_19655.c:13:2: error: expected expression before '/' token
  // memset(a,0,100000*sizeof(char));
  ^
0_0_14231936_19655.c:14:2: error: expected expression before '/' token
  // memset(b,0,100000*sizeof(char));
  ^