What are const variables in C++20?

What are const variables in C++20?

In C++20, const variables are immutable variables that cannot be modified after their initialization. They are declared using the const keyword.

Can you give me an example of how to use const variables?

Sure! Here's an example:

const int maxUsers = 100;
// maxUsers cannot be changed later in the code.

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 the variable is read-only.

Are there any new features related to const in C++20?

Yes! C++20 introduced concepts, which can be used with const variables to enforce constraints on template parameters.