What are some examples of default parameter values in programming?

What are some examples of default parameter values in programming?

Default parameter values allow functions to be called with fewer arguments than defined. For example, in Python, you can define a function like this: def greet(name='Guest'):. If you call greet(), it will use 'Guest' as the default name.

Can you give me another example in JavaScript?

Sure! In JavaScript, you can define a function like this: function multiply(a, b=1) { return a * b; }. If you call multiply(5), it will return 5, using 1 as the default for b.

What happens if I provide both parameters?

If you provide both parameters, the function will use the values you provide instead of the defaults. For example, multiply(5, 2) will return 10.

Are there any languages that don't support default parameters?

Yes, some older programming languages, like C, do not support default parameters directly. You would need to use function overloading or other techniques to achieve similar functionality.