Write a C Program to find Factorial of a given number using functions with Recursion.
#include<stdio.h>
long int fact(int);
void main()
{
int n; //For read user value.
long int r; //to Store the result value.
printf(“Enter a number : “);
scanf(“%d”,&n);
if(n<=0) //Checking entered value is valid or not
{
printf(“Please enter a valid number\n”);
return;
}
r=fact(n); //Function calling and store the resultent value
printf(“Factorial of given number is : %ld\n”,r);
return;
}
long int fact(int a)
{
if(a==1)
return 1;
return a*fact(a-1); //Recurssion calling of the function
}
Output:
Enter a number : 9
Factorial of given number is : 362880
Factorial of a given number using functions without Recursion.
