Converting Numbers to Words in C#: Algorithms and Code Implementation

Learn how to convert numerical inputs into their word representations (e.g., 123 becomes "one hundred twenty-three") using C#. This tutorial provides a detailed algorithm and C# code implementation, explaining the logic and handling of different input scenarios.

Converting Numbers to Words in C#

This program demonstrates how to convert a numerical input into its corresponding word representation (e.g., 123 becomes "one two three"). It uses a combination of loops and a `switch` statement for the conversion.

The Conversion Algorithm

The program's logic involves two main steps:

1. Reversing the Number: The input number is first reversed to easily process digits one by one using a `while` loop.
2. Converting Digits to Words: A `while` loop iterates through the reversed number's digits. A `switch` statement maps each digit to its corresponding word representation.

C# Code for Number to Word Conversion

using System;

public class NumberToWords {
    public static void Main(string[] args) {
        Console.Write("Enter a number: ");
        int n = int.Parse(Console.ReadLine());
        int r, sum = 0;
        // ... (code to reverse the number, then iterate through digits and convert to words using switch) ...
    }
}

Explanation

The program takes a number as input. The first `while` loop reverses the number. The second loop iterates through each digit of the reversed number. A `switch` statement maps each digit (0-9) to its word equivalent. The `default` case handles any unexpected input. The output shows the words corresponding to the digits of the input number.