01.c

学习c语言时的一些例程

#include<stdio.h>
void main()
{float score,average=0;
int n=0;
do
{scanf("%f",&score);
if(score>=0)
{average+=score;
n++;
}
}while(score>=0);
if(n!=0)average/=n;
printf("%6.2f",average);
}