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ollupaC

Can You Help Me?

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In VC I have:
  
typedef struct 
{
	BYTE a;
	WORD b;
	WORD c;
	BYTE d[11];
}TAL;
TAL t;
  
And when I write: sizeof(BYTE) it returns 1 sizoef(WORD) returns 2 So, I think, sizeof(TAL) must be 1 + 2 + 2 + 11 = 16 But, when I write sizeof(TAL) it returns 18! why???

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struct padding........it is an option you can turn off in msvc.
it is something like an efficiency issue where the compiler will add a few extra bytes so that the cpu likes it more.

"I pity the fool, thug, or soul who tries to take over the world, then goes home crying to his momma."
- Mr. T

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Word-alignment.

The first BYTE requires an entire word to store (2 bytes), while the array of 11 bytes also requires an extra byte to keep the structure word-aligned. You can change the alignment, but I wouldn''t recommend that at your current stage.

Don''t worry, it''s normal.

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Thanks to Kylotan for the idea!

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