C++ Program to Find Factorial of Number

To know how to find factorial of number in C++ program, you need to know about c++ looping.

C++ Program to Find Factorial of Number

/*C++ Program to Find Factorial of Number*/

#include<iostream>

using namespace std;

int main()

{

    int i,n,t;

    cout<<"Enter a number : ";

    cin>>n;

    t=n;

    for(i=n-1;i>0;i--)

    {

        n=n*i;

    }

    cout<<endl;

    cout<<"Factorial of "<<t<<" is "<<n;

    return 0;

}

OUTPUT:

Enter a number : 10

Factorial of 10 is 3628800

EXPLANATION:

First we read a number from keyboard using cin>>n statement. Then, we assign this number to variable t. In for loop, we assign (n-1) to variable i, always increment to variable i by 1. And condition is i>0. After the for loop, we display the factorial using cout statement.