a clean macro to make a part of code obsolete

[ar115]

Hi
I have a simple macro which I use when I want to disable part of my code

#define OBSOLETE_CODE(x)

But using this macro when you want to make many lines obsolete in not good
and looks like
OBSOLETE_CODE(
// 100 lines of code
)

I want to have two macro's BEGIN_OBSOLETE and END_OBSOLETE like below

BEGIN_OBSOLETE
// 100 lines of code
END_OBSOLETE

How should i achieve this as the following commands DO NOT work

#define BEGIN_OBSOLETE OBSOLETE_CODE(
#define END_OBSOLETE )

Thanks

[laserlight]

Why not just use #if OBSOLETE or #ifdef OBSOLETE? But if the code is really obsolete, why not just remove it?

[ar115]

My code is unstable currently and I want just to disable some part of it without removing it
maybe i decide to include that part again
#ifdef is a good solution but I was wondering if there is any other choice

[S_M_A]

Why not just comment the code out? If you use the block comment/uncomment command (select a block and Ctrl+K, Ctrl+C / Ctrl+K, Ctrl+U in VC) it's also easier to reactivate the code part by part (no need for adding #ifdef / #endif pairs)

[D_Drmmr]

Why not just comment the code out? If you use the block comment/uncomment command (select a block and Ctrl+K, Ctrl+C / Ctrl+K, Ctrl+U in VC) it's also easier to reactivate the code part by part (no need for adding #ifdef / #endif pairs)

The problem with that approach is that it doesn't work if there is already a block comment in your code or if you want blocks within blocks.

void foo()
{
/*
/*
*/ // comment ends here
*/ // compiler error
}

[laserlight]

The problem with that approach is that it doesn't work if there is already a block comment in your code or if you want blocks within blocks.

The "block comment" S_M_A referred to basically involves prepending // to each of the selected lines.

[Zaccheus]

Why not just use #if OBSOLETE or #ifdef OBSOLETE? But if the code is really obsolete, why not just remove it?

Or even better, give the macro a meaningful name like OLD_V4_CODE_USING_LISTS