Question

How to use class to calculate power in C++

Answer 1

#include <iostream>

using std::cout;
using std::endl;

class Power {
	double base;
	int exp;
	double result;
public:
	Power(double _base, int _exp);
	double pow() {
		return result;
	}
};

Power::Power(double _base, int _exp)
{
	base = _base;
	exp = _exp;
	if (exp == 0)
		return;
	for (result = 1; exp > 0; exp--)
		result = result * base;
}

int main()
{
	Power o1(2, 4);
	cout << o1.pow() << endl;

	Power o2(3, 5);
	cout << o2.pow() << endl;

	return 0;
}




/*
run:

16
243

*/

 

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