Question

How to calculate power of a number in C++

Answer 1

#include <iostream>

using namespace std;

int main()
{
	int exponent = 4, n = 2, i = 1;
	long int power = 1;

	while (i <= exponent)
	{
		power = power * n;
		i++;
	}
	cout << n << " ^ " << exponent << " = " << power << endl;
		
	return 0;
}


/*
run:

2 ^ 4 = 16

*/

 

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Answer 2

#include <iostream>
#include <cmath>

using namespace std;

int main()
{
	int exponent = 4, n = 2;
	long int power = 1;

	power = pow(n, exponent);

	cout << n << " ^ " << exponent << " = " << power << endl;
		
	return 0;
}


/*
run:

2 ^ 4 = 16

*/

 

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