题解 | #总成绩和平均分计算#

#include <stdio.h>

int main() 
{
    float subject1,subject2,subject3,sum,ave;
    scanf("%f %f %f",&subject1,&subject2,&subject3);
    sum=subject1+subject2+subject3;
    ave=sum/3;
    printf("%.2f %.2f",sum,ave);
    return 0;
}