What does ? 0 : 1 mean

Projects Programming
1

I'm looking at some code that I want to modify to use on a project I'm using an arduino to control.

I have no idea what ?0:1 means.
The line is f = (fxy < 0) ? 0 : 1;

My guess is the inverse of.

It complies using the arduino IDE.

Thanks.

2

This is functionally equivalent...

if ( fxy < 0 )
{
  f = 0;
}
else
{
  f = 1;
}

Does that help?

3

The ? : is called "conditional operator"...

https://www.google.com/search?q=c+conditional+operator

4

Is called a ternary IF statement
(fxy < 0) ? 0 : 1;

is the same as:

if(fxy < 0)
{
  // if condition is true
  return 0;
}
else
{
  // otherwise condition is false
  return 1;
}

Edit: CodingBadly Answered it first.