l4_2.cpp

《C++程序设计教程》电子教案及例题源码

#include <iostream.h>
//double power(double x, int n);
void main()
{
	double x;
	int n;
	cout << "请输入X和N的值，用空格分隔：";
	cin >> x >> n;
	cout << x << "的" << n << "次方是：" << power(x,n) << endl;
}
	
double power(double x, int n)
{
	double  a = 1.0;
	int i;
	for(i=1; i<=n; i++) 
		a *= x;
	return a;
}