#include <stdio.h>

main()
{
 int score=0,num=0;
 float total=0;

 printf("input the score:");
 scanf("%d",&score);
 while(score<=100)
 {
  num++;
  total+=score;
  printf("input the score:");
  scanf("%d",&score);
   }
 printf("the average score is %5.1f",total/num);
 }