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    Preprocessor Directives in C: Overview and Usage

    Rumman Ansari September 17, 2026 10,462 views Subject Details
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    Question 1
    What is a preprocessor?
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    Question 2
    How will you print
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    Question 3
    What is Macro? Why do we use the macro?
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    What is the use of #define in C?
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    What is ## operator in C?
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    What is pragma in C? Or how will you execute functions before and after main function in C program?
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    How will you override an existing macro in C?
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    How to check whether macro is defined or not in a C program?
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