size of operatot c

[rkgowda]

what is size of empty structure,point er,unoin with eg

reply me as soon as possible

ravi

[Ganon11]

It would be a simple task to write a test program and find this out...

[JosAH]

what is size of empty structure,point er,unoin with eg

reply me as soon as possible

ravi

Can't you try that for yourself? The answer is highly implementation dependent
anyway so any answer is as good as the other.

kind regards,

Jos

[Banfa]

I sort of thought that in C empty structures/unions where not legal as part of the standard (since they would be fairly useless).

I thought that it was only in C++ where it was valid to have an empty structure/union/class because they have a use as the base of other structures/unions/classes.

[weaknessforcats]

If you have this struct:

struct Data
{

};

You are allowed to declare a pointer:

Data* var;

and this requires the compiler to allow you to put an address of a Data variable in the pointer. Ergo: Creation of a Data variable must be allowed.

This is right there with

char array[] = "Hello";
char data = 3[array];

;

[Banfa]

If you have this struct:

struct Data
{

};

This would be true except that this is not a valid C structure, it is only valid in C++ and the title states this is a C question.