Get Factorial of a Number by C Programming

#include <stdio.h>
#include<conio.h>
 int main()
{
 int c, n, fact = 1;
 printf("Enter a number to calculate it's factorial\n");
 scanf("%d", &n);
 for (c = 1; c <= n; c++)
 fact = fact * c;
 printf("Factorial of %d = %d\n", n, fact);
 getch () ;
 return 0;

}