2.28

<pre name="code" class="cpp">

#include<iostream>
#include<cmath>
using namespace std;
int main()
{
	int x,y,c;
	cout<<"请输入两个数："<<endl;
	cin>>x>>y;
	c=pow( x, y);
	cout<<"x^y="<<c<<endl;
	return 0;
}