factorial.c

/**
 This program will calculate factorial value of a given input. Reccursive function is used in this program.
**/

#include<stdio.h>

/* Main function */
int main(){
    int n;
    int result = 0;

    printf("Enter Int value for calculating factorial: ");
    scanf("%d", &n);

    result = factorial(n);

    printf("Factorial %d = %d", n, result);
    printf("\n");

    return 0;
}

/* Function for calculating factorial */
int factorial(int n){
    printf("Calculating %d", n);
    printf("\n");

    if(n == 1){
        return 1;
    }

    int f =  n * factorial(n-1);

    printf("Done Calculating %d", f);
    printf("\n");

    return f;
}