Write a program to find the factorial of a given number.

Dr. A.P.J. Abdul Kalam Technical University, Lucknow

KCS101 / KCS201 Programming for Problem Solving - Using C Language

Lab Exercises

13. Write a program to find the factorial of a given number.

/*

 File: Prgrm13.c

 Author: Aditya Saini

 Date: Sept 30, 2019

 Description: Program to find the factorial of a given number.

*/

#include <stdio.h>

int main (void)

{

               int number;
               int factorial;
               int i;

               //Input number.
               printf ("Input number: ");
               scanf ("%d", &number);

               //Finding the factorial.

               for (factorial = 1, i = number; i >= 1; i--)
               {
                              factorial = factorial * i; 
               }

               //Output the result
               printf ("Factorial of %d is %d.", number, factorial);

               return 0;

};

Output

Input number: 5

Factorial of 5 is 120.