/Pascal-wtf

Primary LanguagePascal

Factorial Calculator in Pascal

This program, written in Pascal, calculates the factorial of a given number using a recursive approach.

Overview

The FactorialCalculator prompts the user for an integer input. It then calculates the factorial of the number provided by the user using a recursive function. If a negative number is input, the user will be notified that they should provide a non-negative integer.

How to Run

Prerequisites

  • A Pascal compiler, such as Free Pascal.
  • Knowledge on how to compile and run Pascal programs.

Compilation and Execution

  1. Save the provided code into a file named FactorialCalculator.pas.
  2. Compile the program using a Pascal compiler. For example, using Free Pascal:
fpc FactorialCalculator.pas
  1. After compilation, run the executable:
./FactorialCalculator

Usage

Upon execution, the program will prompt:

Enter a number to calculate its factorial:

Input a non-negative integer and press enter. The program will then display the factorial of the given number. If a negative number is input, you'll be prompted to enter a non-negative integer.