C Program to find the Factorial of a Given Number

Published on December 13, 2016 by abundantcode

Filed under C

Last modified December 13, 2016

Print this page

rate 1 star rate 2 star rate 3 star rate 4 star rate 5 star
Your rating: none, Average: 0 (0 votes)

This article have been viewed 3364 times

Problem

Write a program in C programming language to find the factorial of a given number and display it on the screen.

How to find the factorial of a Number in C?

The factorial of a number is generally specified as follows

N! = 1*2*3*4… N

This applies only for the positive number. The factorial of 0 is considered to be 1.

Here’s a program in C demonstrating the factorial of a number.

#include <stdio.h>
int main()
{
    printf("Abundantcode.com coding samples\n");
    int N,index ;
    long factorial = 1;

    printf("Enter a positive integer: ");
    scanf("%d",&N);

    if (N < 0)
        printf("Invalid number");

    else
    {
        for(index=1; index<=N; ++index)
        {
            factorial *= index;              
        }
        printf("Factorial of %d = %llu", N, factorial);
    }

    return 0;
}

Output

Abundantcode.com coding samples

Enter a positive integer: 4

Factorial of 4 = 24

Leave a Comment


x

You might be Interested in these Posts

C Program to convert lower case string to upper case

Problem Statement Write a program in C to convert the given string from lower case to upper case. ...

How to decode a base64 string in C#?

Here's a sample code snippet demonstrating how you can easily decode a base64 encoded string in C#. ...

How to disable editing of items in a combo box in c#?

When working in Win forms using C# and especially when you use the combo box , you would have notice...