week14_1.cpp

//week14_1.cpp
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int main(int argc, char *argv[])
{
 int n, *a;
 float ave=0;
 scanf("%d",&n);
 a=(int *)malloc(sizeof(int)*n);
 for (int i = 0; i < n; ++i)
 {
  scanf("%d",a+i);
  ave += a[i];
 }
 ave = ave/n;

 printf("ave=%f\n",ave);
 return 0;
}