#include <stdio.h>
void main()
{
    int a[10]={7,9,5,4,5,1,7,8,9,10};
    int sum=0;
    int max,min;
    max=a[0];
    min=a[0];
    float ave;
    for (int i=0;i<10;i++)
    {
        sum=sum+a[i];
        if(max<a[i])
        {
            int t;
            t=max;max=a[i];a[i]=t;
            if(min>a[i])
            {
                int x;x=min;min=a[i];a[i]=x;
            }
        }
        else
        {
            if(min>a[i])
            {
                int x;x=min;min=a[i];a[i]=x;
            }

        }
        
    }
    ave=(float)sum/10;
    printf("max=%d\t min=%d\t ave=%.2f\t sum=%d",max,min,ave,sum);
    printf("\n小于平均值的数值有：");
    for(int z=0;z<10;z++)
    {
        if(a[z]<ave)
            
            printf("\n%d",a[z]);
    }
}