编写一个程序，该程序与我们在显示程序清单12.13的输出之后

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
int main(void)
{
 char set,side,dice,i,sum;
 puts("Enter the number of sets:enter q to stop");
 while(scanf("%d",&set) == 1)
 {
 srand( time(0) );
 puts("How many sides and how many dice?");
 while(scanf("%d%d", &side, &dice) != 2)
 {
 scanf("%*s");//滤除非法输入
 printf("input error! input again:");
 }
 printf ("Here are %d sets of %d %d-sided throws.\n",set, dice, side);
 while (set--)
 {
 for (i=0,sum=0; i<dice; i++)
 sum += rand() % side +1;
 printf("\t%d",sum);
 }
 puts("\nHow many sets?enter q to stop");
 }
 return 0;
}