c++ for 循环的使用

#include "stdafx.h"
#include <iostream>
using namespace std;

int num_1;
int num_2;


int main()
{
	cout << "请输入底数：" << endl;
	cin >> num_1;
	cout << "请输入指数：" << endl;
	cin >> num_2;
	int k = num_1;

	for (int i = 0; i < num_2-1; i++)
	{

	k = k*num_1;
	}
	cout << num_1<<"的"<< num_2<<"次方为："<< k << endl;
	system("pause");
    return 0;
}