Help me
 

#define IS_TRC(x) IsTrcPrint( __FILE__, __LINE__, IsTrc x)

Here IS_TRC is a macro.
IsTrcPrint and IsTrc is a function.
By calling this macro where does the control go first?
IsTrcPrint (or) IsTrc?

please explain it.

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It's clear that you did not read the replies in your other thread. Please use a title that covers the topic.

regarding the question, what would it do if you did not use the macro but IsTrcPrint( __FILE__, __LINE__, IsTrc x) straight away.