does anyone know what headers i need to include or what program changes to make to get an assert statement to compile in MSVC++. I know that assert is a compiler level thing so i suspect there are some program changes that i need to make. the MSVC++ help file is useless. i always get an "assert undefined funtion error" -me

Maybe assert.h ?

You can also use stdlib.h

''cassert'' (no .h extension) is the name of the standard header for C++.