View Compilation Error

0_0_13120208_17670.c: In function 'main':
0_0_13120208_17670.c:16:2: error: expected expression before '/' token
  //       printf("%d %f\n",n,per[n]);        
  ^
0_0_13120208_17670.c:35:4: error: expected expression before '/' token
    //       printf("(%d m*per[max]=%d * %f = %f\n",f[max],f[max]-m,per[max],(float)((f[max]-m)*per[max]));
    ^