C++ Program to Find Factorial of a Number

In this program, you will learn how to find factorial of a number.

The factorial of a number is the product of all the integers from 1 to that number.

For example, the factorial of 4 (denoted as 4!) is 1*2*3*4 = 24.

Factorial is not defined for negative numbers and the factorial of zero is one, 0! = 1 .

Source Code

#include <iostream>
using namespace std;

int main()
{
    int no, fact = 1;
    cout<<"Enter the number: ";
    cin>> no;

    while(no > 0)
    {
        fact = fact * no;
        no--;
    }
    cout<<"Factorial of given number is: " << fact;
    return 0;
}