Shorter method for assigning value conditionally

Question

I don't really know the term and don't know with what keywords I could search this, but is there a way to optimize (sort of make it shorter), basically this code?

//int y (1 or 2)
int x = 1;
if(y == 2) x = 2;

I remember seeing something with bool but can't remember what it was, but it used "?" (question marks in the code to check if something is something) How I'd make that shorter too without extra lines of code?

//bool y (true or false)
bool x = true;
if(y) x = false;

Making code shorter is not necessarily an optimization. This looks like premature optimization, which should always be avoided . — Rakete1111, Aug 27 '16 at 14:57

score 4 · Accepted Answer · edited Aug 27 '16 at 15:10

4

What you mean should be ternary operator.

The ternary operator is of the form: condition ? if_true : if_false. You can apply it like this:

int x = (y == 2 ? 2 : 1);

bool x = (y ? false : true);

for the latter code, it can simply be

bool x = !y;

edited Aug 27 '16 at 15:10

Arnav Borborah

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answered Aug 27 '16 at 14:56

MikeCAT

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thanks, this was exactly what I was looking for – beps Aug 27 '16 at 15:03
btw is this faster method for processor what you posted compared to my if()?my brother gave me a "challenge" to program an app that works efficiently on 486 PC in DOS – beps Aug 27 '16 at 17:29

Shorter method for assigning value conditionally

1 Answers1