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Thx Sal.

Hey Sal, I don't have a fixation on macros, I am just trying familiarize myself with debugging and ..... I was told this will be helpful on some of new projects- in lieu of some systems work.

#define IS_UNSIGNED( var ) \
( (var) >= 0 && ~(var) >= 0 )

what are the forseen problems in using this? I see a problem when looking at zero after the integer is one's complemented.

Can...

Thanks a trillion for the tips guys.

Are you saying by adding opening/closing braces that would do the job? I have tried a do while, but program does not compile.
Likewise, do I see a problem without the index been declared?

Sorry, I am a novice to using macro; still don't get it.

Consider the following incorrect code segment. It has two pieces to it: PRINT_THREE_TIMES macro and the code
that uses the macro:

#define PRINT_THREE_TIMES \
printf ("one: %d\n", 1); \
...