C Programming Code Examples
C > Recursion Code Examples
C Program to Find Factorial of a Number Using Recursion
/* C Program to Find Factorial of a Number Using Recursion
The factorial of a positive number n is given by:
factorial of n (n!) = 1*2*3*4....n
The factorial of a negative number doesn't exist. And the factorial of 0 is 1. */
#include <stdio.h>
long int multiplyNumbers(int n);
int main()
{
int n;
printf("Enter a positive integer: ");
scanf("%d", &n);
printf("Factorial of %d = %ld", n, multiplyNumbers(n));
return 0;
}
long int multiplyNumbers(int n)
{
if (n >= 1)
return n*multiplyNumbers(n-1);
else
return 1;
}
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