Member Avatar for mrprassad 
struct abc{
char a;
char b;
char c;
};

what is sizeof (struct abc) in gcc ?

it is giving 3, why not 4 bytes.

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  • Latest Post Latest Post by gusano79
Member Avatar for DJSAN10

Why are you expecting it to be 4 bytes? 3 characters, 1 byte each , total 3 bytes.

Member Avatar for Tumlee

He's expecting the compiler it to align all instances of this structure to 4-byte boundaries via padding. I'm not entirely sure if this should actually change the value returned by sizeof().

Member Avatar for gusano79

He's expecting the compiler it to align all instances of this structure to 4-byte boundaries via padding. I'm not entirely sure if this should actually change the value returned by sizeof().

It should.

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