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C Programming :: C Preprocessor

  1. What will the SWAP macro in the following program be expanded to on preprocessing? will the code compile?

     #include
     #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;
     } 

     

  2. A.

    It compiles

    B.

    Compiles with an warning

    C.

    Not compile

    D.

    Compiles and print nothing


  3. In which stage the following code
    #include<stdio.h>
    gets replaced by the contents of the file stdio.h

  4. A.
    During editing
    B.
    During linking
    C.
    During execution
    D.
    During preprocessing