What are const parameters in C++?

What are const parameters in C++?

Const parameters in C++ are variables that cannot be modified within a function. They help ensure data integrity.

Can you give me an example of using const parameters?

Sure! Here's a simple example:

void displayValue(const int value) {
    std::cout << "Value: " << value << std::endl;
}

In this function, 'value' cannot be changed.

Why should I use const parameters instead of regular parameters?

Using const parameters can improve performance by avoiding unnecessary copies and also makes your code safer by preventing accidental modifications.

Are there any exceptions where I shouldn't use const parameters?

Yes, if you need to modify the parameter within the function, you should not use const. It's also not suitable for parameters that need to be changed.