C PROGRAM

1- WAP to find factorial of given number using recursion

Description:

Read number n from user.

Validate the given number

Call main function from main for calculating factorial.

Prompt for continue option without using loop.

Pr-requisites:-

Storage Classes

Recursions

Objective: -

To understand the concept of Recursion and static keyword

Inputs: -

Positive integer N

Sample execution: - Test Case 1: user@emertxe] ./factorial Enter the value of N : 7 Factorial of the given number is 5040 Test Case 2: Enter the value of N : 5 Factorial of the given number is 120 Test case 3: Enter the value of N : -1 Invalid Input Test case 4: Enter the value of N : 0

Factorial of the given number is 1

requested file

#include

int main() { static int num; static unsigned long long int fact = 1; main(); }