What are the benefits of using const parameters in C++?

What are the benefits of using const parameters in C++?

Using const parameters in C++ helps to prevent accidental modification of data, improves code readability, and can enhance performance by allowing the compiler to optimize better.

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

Sure! Here's an example:

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

In this function, 'value' cannot be modified inside the function.

Are there any performance benefits to using const?

Yes, using const can lead to performance improvements because it allows the compiler to make optimizations, knowing that the value won't change.

What happens if I try to modify a const parameter?

If you try to modify a const parameter, the compiler will throw an error, preventing you from changing its value.