### What is Factorial of a number?

Factorial of a number ‘n’ is the product of all positive integers less than or equal to n, denoted by ‘n!’. For example find factorial of 5.

5! = 5 x 4 x 3 x 2 x 1 = 120

Now let’s see the program to find factorial of a number in C++

### PROGRAM:

#include<iostream> using namespace std; int main() { int num,factorial=1; cout<<" Enter Number To Find Its Factorial: "; cin>>num; for(int a=1;a<=num;a++) { factorial=factorial*a; } cout<<"Factorial of Given Number is ="<<factorial<<endl; return 0; }

### Sample Output:

Enter Number To Find Its Factorial: 5 Factorial of Given Number is = 120