exp09_01.c

《C语言程序设计教程、实验与练习》 源文件下载

#include <stdio.h>

struct  marks
{
 float  grades[5];
 float  average;
 };

void main()
{
 int i;
 struct marks m;

 printf("input the grades of five course:\n");
 for(i=0;i<5;i++)
   scanf("%f",&m.grades[i]);
 m.average=0;
 for(i=0;i<5;i++)
   m.average+=m.grades[i];
 m.average/=5;
 printf("the average is %f\n",m.average);
 }