View Compilation Error

0_0_19129183_19524.c: In function 'main':
0_0_19129183_19524.c:9:2: error: expected expression before '/' token
  //a[3]=4;
  ^
0_0_19129183_19524.c:10:2: error: expected expression before '/' token
  //a[4]=7;
  ^