题目描述

平均数3
情况3有一点复杂

样例

#include<stdio.h>
int main()
{
    double a, b, c, d,x;
    scanf("%lf%lf%lf%lf", &a, &b, &c, &d);
    x = ( a * 2 + b * 3 + c * 4 + d ) / 10;
    printf("Media: %.1lf\n", x);
    if (x >= 7)
    {
        printf("Aluno aprovado.\n");
        return 0;
    }
    if (x < 5) 
    {
        printf("Aluno reprovado.\n");
        return 0;
    }
    double y;
    printf("Aluno em exame.\n");
    scanf("%lf", &y);
    printf("Nota do exame: %.1lf\n", y);
    double z = (x + y) / 2.0;
    if (z >= 5.0)
        printf("Aluno aprovado.\n");
    else printf("Aluno reprovado.\n");
         printf("Media final: %.1lf\n", z);
    return 0;
}