What is the difference between local and global variables in C++?

What is the difference between local and global variables in C++?

Local variables are declared within a function and can only be accessed there, while global variables are accessible throughout the entire program.

Can you give me an example of each?

Sure! A local variable could be defined inside a function like this: void myFunction() { int localVar = 5; }. A global variable would be declared outside any function: int globalVar = 10;.

What are the advantages of using global variables?

Global variables can be accessed from any function, making it easier to share data across different parts of a program. However, they can also lead to issues with data integrity if not managed carefully.

Are there any downsides to using global variables?

Yes, global variables can make debugging difficult and can lead to unintended side effects if multiple functions modify them.