题目描述

平均数3

样例

#include <iostream>
using namespace std;
int main()
{
    double a,b,c,d,x,y,z;
    scanf("%lf%lf%lf%lf",&a,&b,&c,&d);
    x=(2*a+3*b+c*4+d)/10.0;
    printf("Media: %.1lf\n",x);
    if(x>=7.0)
    printf("Aluno aprovado.\n");
    else if(x<5.0)
    printf("Aluno reprovado.\n");
    if(x>=5.0&&x<7.0)
    {
        printf("Aluno em exame.\n");
        scanf("%lf",&y);
        printf("Nota do exame: %.1lf\n",y);
        z=(x+y)/2.0;
        if(z>=5.0)
        printf("Aluno aprovado.\n");
        else
        printf("Aluno reprovado.\n");
        printf("Media final: %.1lf",z);
    }
    return 0;
}