#include<iostream>
using namespace std;



int main()
{

int arr[10]={1,2,3,4,5,6,7,8,9,20};
cout<<"整个数组所占内存空间为"<<sizeof(arr)<<endl;
cout<<"每个元素所占内存空间为"<<sizeof(arr[0])<<endl;
cout<<"数组的元素个数为"<<sizeof(arr)/sizeof(arr[0]) <<endl;


cout<<"数组首地址为"<<(long long )arr<<endl;
cout<<"数组中第一个元素地址为"<<(long long)&arr[0]<<endl;
cout<<"数组中第二个元素地址为" <<(long long)&arr[1]<<endl;
 


 }