View Compilation Error

0_0_16688278_519.c: In function 'main':
0_0_16688278_519.c:68:3: error: expected expression before '/' token
   // scanf("%d %d",&n,&m);
   ^
0_0_16688278_519.c:71:8: error: expected expression before '/' token
        // printf("w");
        ^
0_0_16688278_519.c:73:14: error: expected expression before '/' token
         {    //printf("w1");
              ^
0_0_16688278_519.c:75:13: error: expected expression before '/' token
             //printf("w2");
             ^