#### In this Program, you will learn to find or Calculate Power of a Number manually, and by using pow( ) function.

To understand this Program to Calculate Power of a Number, you should have the knowledge of following C++ programming topics:

- C++ while and do…while Loop

This program takes two numbers from the user (a base number and an exponent) and calculates the power.

Power of a number = baseexponent

#### Program to Compute Power Manually

#include <iostream> using namespace std; int main() { int exponent; float base, result = 1; cout << "Enter base and exponent respectively: "; cin >> base >> exponent; cout << base << "^" << exponent << " = "; while (exponent != 0) { result *= base; --exponent; } cout << result; return 0; }

**Output**

Enter base and exponent respectively: 3.4 5 3.4^5 = 454.354

The above technique works only if the exponent is a positive integer.

If you need to find the power of a number with any real number as an exponent, you can use pow( ) function.

#### Program to Compute power using pow( ) Function

#include <iostream> #include <cmath> using namespace std; int main() { float base, exponent, result; cout << "Enter base and exponent respectively: "; cin >> base >> exponent; result = pow(base, exponent); cout << base << "^" << exponent << " = " << result; return 0; }

**Output**

Enter base and exponent respectively: 2.3 4.5 2.3^4.5 = 42.44

Ask your questions and clarify your/others doubts on Calculate Power of a Number by commenting.** Documentation**