1. Question: What will the SWAP macro in the following program be expanded to on preprocessing? will the code compile?
    #include<stdio.h>
    #define SWAP(a, b, c)(c t; t=a, a=b, b=t)
    int main()
    {
        int x=10, y=20;
        SWAP(x, y, int);
        printf("%d %d\n", x, y);
        return 0;
    }
    
     

    A
    It compiles

    B
    Compiles with an warning

    C
    Not compile

    D
    Compiles and print nothing


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  2. Question: In which stage the following code #include&lt;stdio.h&gt; gets replaced by the contents of the file stdio.h 

    A
    During editing

    B
    During linking

    C
    During execution

    D
    During preprocessing


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