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I am trying to understand the need and usage of pre processor definitions in C++. I understand the use of include guards #ifndef #define and #endif. But I don’t exactly understand the usage of the need of:
Open the project's Property Pages dialog box.
Click the C/C++ folder.
Click the Preprocessor property page.
Modify the Preprocessor Definitions property.
If you have
#ifdefor#ifndefin your source files, this is one of the places where you can influence the results of those tests.