Birth of Object Oriented Programming

As the project expands, developers face several challenges:

• Duplicate Code – Similar logic is repeated in multiple functions.
• Global Variables – Shared data can be modified from anywhere.
• Difficult Debugging – Finding the source of an error becomes time-consuming.
• Difficult Maintenance – A small change may affect many functions.
• Poor Team Collaboration – Multiple developers working on shared data can create conflicts.
• Security Issues – Sensitive data can be accessed or modified by any function.
• Poor Scalability – Managing hundreds of functions becomes increasingly difficult.

Can we organize the code better? What if the data and the functions that operate on it stayed together? Let's explore Object-Oriented Programming (OOP).

In the early days of software development, most applications were built using Procedural Programming. This approach worked well for small programs because developers organized their code into functions that executed one after another.

As software grew larger during the 1960s, developers began building complex systems such as banking applications, hospital management systems, and airline reservation systems. Managing these applications became increasingly difficult because data and functions were kept separate. The same data was accessed from multiple functions, making debugging, maintenance, and teamwork more challenging.

Developers realized that software needed a better structure. A new idea was introduced: instead of keeping data and functions separately, they should be grouped together in a single unit. This made programs easier to understand, maintain, reuse, and expand. This approach became known as Object-Oriented Programming (OOP).

Today, OOP is one of the most widely used programming paradigms because it helps developers build organized, reusable, and scalable software for real-world applications. Real-World Example: Library Management System

Imagine a library where all book information is stored in one place, while the operations for borrowing, returning, and searching books are written separately.