C++ Programming Assignment Report: String Manipulation, Arrays, OOP, and Manual Sorting & Searching

[Eng. Yasser Al-Bahri]

تقرير برمجي باستخدام ++C: التعامل مع السلاسل، المصفوفات، البرمجة الكائنية، وفرز/بحث يدوي

Introduction

This report documents the solutions for Assignment #3 in Computer Programming 2.

The assignment includes three main programming tasks using C++: string operations, array handling, and class-based design (OOP).

Additionally, it involves sorting and searching techniques using Bubble Sort and Binary Search, which were solved manually.




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Question 1: String Manipulation

The program performs the following operations:


• Reads a string from user input.
• Displays the string's length.
• Reverses the string.
• Counts vowels and consonants.
• Extracts a substring using user-specified indices.


Concepts Applied:


• Use of <string> and <algorithm> libraries
• Methods: length(), reverse(), substr()
Screenshot of Program Code and Output:







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Question 2: Arrays and Average Calculation

The program collects scores for three students in Math, Science, and English, then calculates and displays the average for each subject.

Concepts Applied:


• 2D array declaration and initialization
• Nested loops
• Precision control with iomanip
Screenshot of Program Code and Output:















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Question 3: Class Implementation – Library Catalog

Two C++ classes were implemented:


• Book: Represents a book with ID, title, author, and genre.
• Catalog: Manages a list of books and allows adding, removing, displaying, and searching books by ID.
Concepts Applied:


• Object-Oriented Programming (OOP)
• Encapsulation and data abstraction
• Dynamic arrays using vector
Screenshot of Program Code and Output:















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Part 2: Manual Sorting & Searching

a) Bubble Sort

The array was sorted manually using the Bubble Sort algorithm.
The number of iterations, comparisons, and swaps were recorded.

b) Binary Search

Binary Search was used to find the target number 60 after sorting the array.






Handwritten Calculations for Bubble Sort and Binary Search:







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Conclusion

The assignment provided a hands-on experience in core C++ programming techniques, such as handling strings and arrays, applying sorting and searching logic, and developing modular class-based systems.

The implementation and manual parts together reinforced both practical and theoretical skills essential for a strong foundation in programming.