Assign single value to multiple variables

Question

I want to assign 0 to all declared values in a single statement.

char r, g, b = 0;

The above only assigns 0 to b but not to the other variables

I guess the stament is, the above only assigns 0 to b rather than r ? — niko
– niko, Commented Sep 27, 2011 at 8:06

DipSwitch · Accepted Answer · 2011-09-27 07:54:12Z

55

You can do it two ways:

char r = 0, g = 0, b = 0;

or

char r, g, b;
r = g = b = 0;

answered Sep 27, 2011 at 7:54

DipSwitch

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5 Comments

Morrowless Over a year ago

So this is as terse as it gets?

DipSwitch Over a year ago

@Plenilune Yes, or you should make them static like Sandip suggested.

paxdiablo Over a year ago

NO! Don't make them static. While that inits them to zero, you still have to reinit them if you want them reset, and using static will introduce all sorts of other problems. Your second solution is the right one.

Keith Thompson Over a year ago

@Plenilune: C isn't terse enough for you? 8-)}

olfek Over a year ago

Does assignment happen right to left or left to right?

R.. GitHub STOP HELPING ICE · Accepted Answer · 2011-09-27 23:41:19Z

21

Tersest form is:

int r,g,b=g=r=0;

answered Sep 27, 2011 at 23:41

R.. GitHub STOP HELPING ICE

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2 Comments

winklerrr Over a year ago

Never saw that before! Finally I know how to get it done in a one liner! (order of g and r isn't important, right? They just have to be after b, right?)

DipSwitch Over a year ago

haha nice one :D @winklerrr the rest after b yeah, order doesn't matter.

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