📚 String Library - C++ OOP

A custom C++ String Utility Library implemented using Object-Oriented Programming (OOP) principles.

This library contains a collection of commonly used string manipulation algorithms organized inside a reusable class called clsString.

The goal of this project is to demonstrate how to transform algorithm-based functions into a clean, reusable, and maintainable C++ library.

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📑 Table of Contents

• Project Overview
• Features
• Concepts Applied
• Project Structure
• Example Usage
• Example Output
• Future Improvements
• Learning Source

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🚀 Project Overview

Working with strings is one of the most common tasks in programming.

Instead of rewriting string functions repeatedly, this project organizes many useful string algorithms into a single reusable class library.

The project demonstrates how Object-Oriented Programming can be used to design reusable components that improve code structure and maintainability.

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⚙️ Features

The clsString class provides many useful utilities for working with strings.

📝 Word Operations

• Count words in a string
• Print each word
• Reverse words order
• Split string into words
• Join words into a string

🔤 Letter Operations

• Convert string to Uppercase
• Convert string to Lowercase
• Capitalize the first letter of each word
• Invert letter case
• Count capital letters
• Count small letters

🔍 Character Analysis

• Count specific characters
• Count vowels
• Print vowels in a string

✂️ String Cleaning

• Trim left spaces
• Trim right spaces
• Trim full string
• Remove punctuation

🔄 String Editing

• Replace words in a string
• Reverse words
• Modify characters

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🧠 Concepts Applied

This project demonstrates several core programming concepts:

• Object-Oriented Programming (OOP)
• Encapsulation
• Function Overloading
• Static Methods
• Code Reusability
• Clean Code Practices
• Algorithm Implementation

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📂 Project Structure

Project-8-String-Library-OOP
│
├── clsString.h
│   String utility class containing all string operations
│
└── main.cpp
    Example program demonstrating how to use the library

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💻 Example Usage

#include <iostream>
#include "clsString.h"
using namespace std;

int main()
{
    clsString String1("Ahmed Yaser");

    cout << "String1 = " << String1.Value << endl;

    cout << "Number of words: "
         << String1.CountWords() << endl;

    String1.UpperFirstLetterOfEachWord();

    cout << "After Capitalizing: "
         << String1.Value << endl;

    String1.ReverseWordsInString();

    cout << "Reversed Words: "
         << String1.Value << endl;

    String1.ReplaceWord("Ahmed", "Ibrahim");

    cout << "After Replace: "
         << String1.Value << endl;

    return 0;
}

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🖥️ Example Output

String1 = Ahmed Yaser
Number of words: 2
After Capitalizing: Ahmed Yaser
Reversed Words: Yaser Ahmed
After Replace: Ibrahim Yaser

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🎓 Learning Source

This project was implemented while following the Programming Advices Roadmap

Instructor
Dr. Mohammed Abu-Hadhoud

The project demonstrates how to convert algorithm-based code into clean and reusable object-oriented libraries.

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