What are the best practices for variable scope in programming?

What are the best practices for variable scope in programming?

Best practices for variable scope include using local variables when possible, avoiding global variables, and clearly defining variable scopes.

Why should I avoid global variables?

Global variables can lead to code that is hard to debug and maintain, as they can be modified from anywhere in the code.

Can you give an example of local vs global variable?

Sure! A local variable is defined within a function and can only be accessed there, while a global variable is defined outside any function and can be accessed anywhere.

How does variable scope affect memory usage?

Variable scope affects memory usage because local variables are typically stored on the stack and are released when the function exits, while global variables remain in memory for the duration of the program.

What tools can help manage variable scope?

Tools like linters and IDEs can help manage variable scope by highlighting scope issues and suggesting best practices.