#include<stdio.h>
#include<stdlib.h>
//动态申请空间必须加上头文件stdlib.h
int main()
{
int *a=NULL,n,i;
printf("Please enter array numbers:");
scanf("%d",&n);
a=(int *)malloc(sizeof(int)*n);
printf("Please enter %d scores:",n);
for(i=0;i<n;i++)
{
scanf("%d",a+i);
}
int sum=0;
for (i =0;i<n;i++)
{
sum = sum + *(a+i);
}
printf("aver = %d\n",sum/n);
free(a);
}
