因为是double类型所以scanf里边用%lf获取，刚才手打的，没测试，现在可以了

#include<stdio.h>
int main(void)
{
    double max;
    double min;
    double sum;
    double score;
    scanf("%lf",&score);
    sum=max=min=score;
    for(int i=1;i<7;i++)
    {
        scanf("%lf",&score);
        sum+=score;
        max=score>max?score:max;
        min=score<min?score:min;
    }
    printf("AVG=%f\n",(sum-max-min)/5);
    return 0;
} 

[ 本帖最后由 lxsjzbd 于 2012-12-6 09:19 编辑 ]

#include<stdio.h>
void main()
{float high=0,low=10,all=0,get,a[10];
int i;
for(i=0;i<7;i++)
{scanf("%f",&a[i]);
if(a[i]>high) high=a[i];
if(a[i]<low) low=a[i];
all+=a[i];}
get=(all-high-low)/5;
printf("去掉一个最高分%.2f,去掉一个最低分%.2f,最终得分为%.2f\n",high,low,get);
}