Factorial Using Loop Example Program In C++

About this program

This is an example program in c common example program. Read the concept first: C++ Variables and Data Types, then study the code and output below.

Definition

In mathematics, the factorial of a non-negative integer n, denoted by n!, is the product of all positive integers less than or equal to n. For example,

6! = 6 x 5 x 4 x 3 x 2 x 1 = 720

The value of 0! is 1, according to the convention for an empty product.

For Loop Syntax

//common
for (initialization; condition; increment/decrement)
{

}

//for Factorial
for (int counter = 1; counter <= n; counter++) {
        fact = fact * counter;
}

Factorial Using Loop Example Program

/*  Example Program For Factorial Value Using For Loop In C++
    little drops @ thiyagaraaj.com
    Coded By: THIYAGARAAJ MP             */

#include<iostream>
#include<conio.h>

using namespace std;

int main()
{
     // Variable Declaration
     int counter, n, fact = 1;
     // Get Input Value
     cout<<"Enter the Number :";
     cin>>n;
     //for Loop Block
     for (int counter = 1; counter <= n; counter++)
     {
         fact = fact * counter;
     }
     cout<<n<<" Factorial Value Is "<<fact;
     // Wait For Output Screen
     getch();
     return 0;
 }

Sample Output

Enter the Number :6
6 Factorial Value Is 720

Related Pages

Learn the concept first, then study the code:

• C++ Programs — Browse all C++ Programs.
• C++ Variables and Data Types — Tutorial — data types and variable declaration.
• Factorial Using Function Example Program In C++ — More in c common example program.
• Factorial Using Recursion Example Program In C++ — More in c common example program.