c语言实现动态数组

指针

stdlib库的malloc()函数

#include<stdio.h>#include<stdlib.h>int main(){int i,n,sum=0,*p;scanf("%d",&n);p=malloc(sizeof(int)*n);for(i=0;i<n;i++){    scanf("%d",&p[i]);    sum+=p[i];}printf("%d %d",sum,sum/n);return 0;}