C Program to find the factorial of a number using Recursive function

Published on December 25, 2016 by abundantcode

Filed under C

Last modified December 25, 2016

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Problem

Write a program in C to find the factorial of a number using recursion and display the result.

How to find the factorial of a number using recursion in C ?

The Formula to find the factorial of a number (n) is

(n!) = 1*2*3*4….n

Here’s a C program to demonstrate this.

#include <stdio.h>
long int FindProduct(int n);
int main()
{
    int input;
    printf("Abundantcode.com Coding samples\n");
    printf("Enter a Number : ");
    scanf("%d", &input);
    printf("Factorial of %d = %ld", input, FindProduct(input));
    return 0;
}
long int FindProduct(int input)
{
    if (input >= 1)
        return input*FindProduct(input-1);
    else
        return 1;
}

Output

Abundantcode.com Coding samples

Enter a Number : 5

Factorial of 5 = 120

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