Question

How to calculate factorial of a number using recursion in C

Answer 1

#include <stdio.h> 

long recursiveFactorial(int);

int main(int argc, char **argv) 
{
    int n;
  
    printf("Enter a number: ");
    scanf("%d", &n);
         
    printf("Factorial of %d is: %ld\n", n, recursiveFactorial(n));

    return(0);
}
long recursiveFactorial(int n)
{
  if (n == 0)
    return 1;
  else
    return(n * recursiveFactorial(n - 1));
}


/*
run:

Enter a number: 5
Factorial of 5 is: 120

*/

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