Example: Program to Computer Power Using Recursion
#include <iostream>
using namespace std;
int calculatePower(int, int);
int main()
{
int base, powerRaised, result;
cout << "Enter base number: ";
cin >> base;
cout << "Enter power number(positive integer): ";
cin >> powerRaised;
result = calculatePower(base, powerRaised);
cout << base << "^" << powerRaised << " = " << result;
return 0;
}
int calculatePower(int base, int powerRaised)
{
if (powerRaised != 0)
return (base*calculatePower(base, powerRaised-1));
else
return 1;
}
Output
Enter base number: 3 Enter power number(positive integer): 4 3^4 = 81
This technique can only calculate power if the exponent is a positive integer.
To find power of any number, you can use pow() function.
result = pow(base, exponent);