c++ - VC++ 2010 Express | Compiler removes some code from my project -

i'm using vc++ 2010 express.

i have code that:

if(strlen("aa") == strlen("bb"))  messagebox("aa == bb"); else  messagebox("aa != bb");

in built executable there bytes "aa == bb", there no "aa != bb".
means compiler optimizes predictable code.
there way disable this?

cheers, kamil.

add

#pragma function(strlen)

to program @ beginning.

Script