To find the factorial of a number in C

factorial.c

/**
  * To find the factorial of a number
  **/

#include<stdio.h>
#include<stdlib.h>

int main(void)
{
  int n, i, f;

  printf("Enter any number:");
  scanf("%d", &n);

  if(n < 0) {
    printf("\nFactorial does not exist for negative numbers\n");
    exit(0);
  }

  for(f = 1, i = n; i > 0; i--)
    f = f * i;

  printf("\nFactorial of %d is %d\n", n, f);

  return 0;
}