c语言新手：输入某学生三个成绩，求出总分与平均分。例输入70 85 92，求出总分=247，平均分=82.333333

Question

如题所述

Answer 1

#include<stdio.h>
void main()
{
int a,b,c;
printf("请输入三个学生成绩：\n");
scanf("%d%d%d",&a,&b,&c);
printf("三个学生总分是：%d\n",a+b+c);
printf("三个学生平均分是：%f\n",(a+b+c)*1.0/3);
}

Answer 2

#include <stdio.h>

int main ( void )
{
int score[3];
int sum;
double average;
scanf ( "%d%d%d", &score[0], &score[1], &score[2] );
sum = score[0] + score[1] + score[2];
average = (double)sum/3.0;
printf ( "总分：%d\t平均分：%lf\n", sum, average );
return 0;
}

Answer 3

#include<stdio.h>

int main()
{
int a,b,c;
while(scanf("%d %d %d",&a,&b,&c) == 3)
printf("%d %lf\n",a+b+c,(a+b+c)/3.0);
return 0;
}

Answer 4

main(){
int i;float a,sum=0;
printf("imput 3 num!");
for(i=0;i<=2;i++){scanf("%f",&a);sum+=a;}
printf("总分为%f平均分为%f\n",sum,sum/3);
getch();
}