## Q. C++ Program to Find Factorial of a Given Number.

Here you will find an algorithm and program in C++ programming language to find factorial of a number. First let us understand what factorial means.

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

**For Example : **
Factorial of 5 is 120 i.e. 5*4*3*2*1

## Algorithm to find factorial of a given number

START step 1 : Read the number n step 2 : [Initialize] i=1, fact=1 step 3 : Repeat step 4 through 6 until i=n step 4 : fact=fact*i step 5 : i=i+1 step 6 : Print fact STOP

# C++ Program to Find Factorial of a Number

#include <iostream> using namespace std; int main() { unsigned int num=7; unsigned long long factorial = 1; for(int i = 1; i <=num; ++i) { factorial *= i; } cout << "Factorial of " << num << " = " << factorial; return 0; }

#### Output

Factorial of 7 = 5040