程序如下:
#include"stdio.h"
int main (void)
{
int a,b,c;//定义三个变量啊a,b,c分别存放三门课的成绩
double sum,ave;//定义sum和ave分别存放三门成绩的和与平均值
printf("请输入三门课程的成绩a= b= c= ");
scanf("%d%d%d",&a,&b,&c);
sum=a+b+c;//求三门课程的和
ave=(a+b+c)/3.0;//求三门课程的平均值
printf("输出三门课程的总分及平均分sum=%lf\nave=%lf\n",sum,ave); //将总分及平均法进行输出
return 0;
}
假设三门课成绩分别为75,80,82;
所得结果为:
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/b3119313b07eca8025c92d64972397dda0448360?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)