How do I use const variables in C++?

How do I use const variables in C++?

In C++, a const variable is a variable whose value cannot be changed after it is initialized. You declare it using the keyword 'const'. For example: const int x = 10;.

Can you give me an example of using const in a function?

Sure! You can use const in function parameters to prevent modification. For instance: 'void printValue(const int value) { std::cout << value; }'.

What happens if I try to change a const variable?

If you try to change a const variable, the compiler will throw an error, indicating that you cannot modify a constant value.

Are there any best practices for using const variables?

Yes! It's best to use const for variables that should not change, as it improves code readability and helps prevent bugs.