编辑代码

#include <iostream>
using namespace std;
int main() {
    int a[5]={1,2,3,4,};
    cout<<a[4]<<endl;
    int i=0;
    while (2){

        cout<<i<<" "<<a[i]<<endl;
        i++;
        if(i==4){
            break;
        }
    }
	return 0;
}