What are default arguments in C++?

What are default arguments in C++?

Default arguments in C++ allow you to specify a value for a function parameter that will be used if no argument is provided.

Can you give me an example of how to use default arguments?

Sure! Here's a simple example:

void greet(std::string name = "Guest") {
    std::cout << "Hello, " << name << "!";
}

In this case, if you call greet() without an argument, it will print "Hello, Guest!".

Are there any limitations to using default arguments?

Yes, you can only specify default arguments in the function declaration, not in the definition. Also, all default arguments must be to the right of any non-default arguments.

What happens if I provide a value for a parameter with a default argument?

If you provide a value for a parameter with a default argument, the provided value will be used instead of the default.