How can I leave the first parameter at default and only set the second parameter?

Answer 1

set a default for the first parameter.

Answer 2

Can someone suggest a better answer?

Answer 3

for your first parameter assign it to a number:

int something(int a = 45, int b) {

}

This leaves integer 'b' to be assigned later and sets 'a' to a default value
Is that what you meant?