How to represent -infinity in programming

Question

How can I represent -infinity in C++, Java, etc.?

In my exercise, I need to initialize a variable with -infinity to show that it\'s a very

Answer 1

You could define a number as -infinite and, when adding or substracting something from a number, you do first check if the variable was equal to that pseudo-number. If so you just leave it as it was.

But you might find library functions giving you that functionality implemented, e.g Double in Java or std in c++.