C program to find Factorial of a given Number.

To print a factorial of a number:

Program:

#include <stdio.h>

#include <conio.h>

void main()

{

    int c, n; //Declaring Variable.

    unsigned long int fact=1;         

    printf("Enter an integer: "); //For printing

    scanf("%d",&n); //For Input.

    if ( n< 0)

        printf("Error!!! Factorial of negative number doesn't exist."); //For printing

    else

    {

       for(c=1;c<=n;++c)    //for loop 

          fact*=count;  

    printf("Factorial = %lu",fact); //For printing

    }

   getch(); //Getting a character or waiting for key press 

}

 

Output: