Disadvantages of global variable
- Encapsulation Issues: Global variables can lead to encapsulation issues by allowing any part of the program to modify their values, potentially leading to unintended side effects.
- Debugging Complexity: Since global variables can be accessed and modified from anywhere in the program, tracking down bugs related to their usage can be challenging.
- Potential for Race Conditions: In multithreaded or concurrent programs, global variables can introduce race conditions if accessed and modified concurrently by multiple threads or processes.
- Maintainability: Excessive use of global variables can make code harder to understand and maintain, as their effects may not be localized to specific functions or modules.
Local and Global Variables
Local variables are declared within a specific block of code, such as a function or method, and have limited scope and lifetime, existing only within that block. Global variables, on the other hand, are declared outside of any function and can be accessed from any part of the program, persisting throughout its execution.
Table of Content
- Local Variable
- Example of Local Variable
- Advantages of local variable
- Disadvantages of local variable
- Global Variable
- Example of Global Variable
- Advantages of global variable
- Disadvantages of global variable