sizeof function implementation using C programming

[ravichobey]

Hi all,

How to implement sizeof() function using C programming?

Regards,
Ravi

[JosAH]

Hi all,

How to implement sizeof() function using C programming?

Regards,
Ravi

You can't do that because the compile time function sizeof needs access to
the compiler's symbol table for the type information, e.g. what would "sizeof(T)"
be withouth knowing what T would be? T can be a typedef identifier or an ordinary
identifier with a type. You don't have that information anymore when your program
is running.

kind regards,

Jos

[mac11]

There was a thread on this very subject not long ago, see here:

http://bytes.com/forum/thread798971-sizeof.html

Wow! Jos types fast!

[JosAH]

TWow! Jos types fast!

Yup, my asbestos keyboard can hardly stand the heat :-)

kind regards,

Jos