C Program to Find Factorial of a Given Number

Question: Write a program in C to read a number from a user and then find factorial of that number.

Program

#include<stdio.h>
#include<conio.h>

int main()
{
	 long int i,n, f=1;
	 clrscr();
	 
	 /* Input */
	 printf("Enter any positive integer: ");
	 scanf("%ld", &n);
	 
	 /* Finding Factorial */
	 for(i=1;i<= n;i++)
	 {
	  f = f*i;
	 }
	 printf("%ld != %ld",n,f);
	 getch();
	 return(0);
}

Output of above program :

Enter any positive integer: 9 ↲
9 != 362880

Note: ↲ indicates enter is pressed.