How do I convert this: struct color {

Question

C / C++

Nils

How do I convert this: struct color {

unsigned char alpha;
unsigned char red;
unsigned char green;
unsigned char blue;
};
to an int in C++?

0

23.10.2020

19 ответов

4 просмотра

Danya🔥

aklil
i may not answer the question but what do u mean t...

He wants to pack the whole structure into a single int variable

0

23.10.2020

aklil

Danya🔥
He wants to pack the whole structure into a single...

like alpha 4 red 5 green 6 blue 7 and the new var will hold 4567 ?

0

23.10.2020

Danya🔥

aklil
like alpha 4 red 5 green 6 blue 7 and the new var...

No

0

23.10.2020

aklil

Danya🔥
No

what then?..a sum of them?

0

23.10.2020

Kuntal M

into a 32 bit int?

0

23.10.2020

Daniele°

Depend, for RGBA unsigned color=((unsigned)R<<24)|((unsigned)G<<16)|((unsigned)B<<8|(unsigned)A;

0

23.10.2020

Kuntal M

Daniele°
Depend, for RGBA unsigned color=((unsigned)R<<24)...

damn it is definitely easier in rust

0

23.10.2020

Daniele°

Kuntal M
damn it is definitely easier in rust

union color struct { unsigned char alpha; unsigned char red; unsigned char green; unsigned char blue; } unsigned color; };

0

23.10.2020

Kuntal M

Daniele°
union color struct { unsigned char alpha; ...

i would like to avoid that, :P

0

23.10.2020

Parra

Daniele°
Depend, for RGBA unsigned color=((unsigned)R<<24)...

this is the correct way

0

23.10.2020

Parra

Kuntal M
damn it is definitely easier in rust

how is it?

0

23.10.2020

Danya🔥

Parra
this is the correct way

It is not sizeof(int) * CHAR_BIT is not necessarily equals to 32

0

23.10.2020

Parra

Danya🔥
It is not sizeof(int) * CHAR_BIT is not necessaril...

I'm not taking that into account

0

23.10.2020

Nils Автор вопроса

Kuntal M
into a 32 bit int?

No just a normal int

0

23.10.2020

John

There should be macro for library. To conform format/endianess.

0

23.10.2020

swarnim

Daniele°
Depend, for RGBA unsigned color=((unsigned)R<<24)...

Don't do it int isn't fixed size so it can fuck things up.

0

23.10.2020

swarnim

Kuntal M
damn it is definitely easier in rust

Wat?

0

23.10.2020

Nils Автор вопроса

John
There should be macro for library. To conform form...

There is and I found it

0

23.10.2020

aklil · Accepted Answer

aklil

i may not answer the question but what do u mean to int isnt char already int(number)

0

23.10.2020

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