3. Create a recursion program for a factorial problem of n, the recursion function should take n and return n!
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/*Program that defines recursive function to find Factrial of number*/
//include standard input/output header
#include<stdio.h>
//function to find factorial of number n recursively
int factorial(int n)
{
if (n<=0)
{
return 1;
}
else
{
//calling factorial function recrsively and multiply
//its return value to get factorial of n
return n*factorial(n-1);
}
}
//main function of program
int main()
{
int n;
//Ask user to enter a number and store it in n
printf("Enter a number: ");
scanf("%d",&n);
//call factotial function and display factrial of number
printf("Factorial of number %d = %d", n, factorial(n));
return 0;
}
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