Parameterized Macros

#define SQR(x) ((x)*(x))

• After this definition, the preprocessor replaces every occurrence of the form

  SQR(a)
  

by the replacement text

((a)*(a))

For example:

w = SQR(x) + 1;

z = SQR(w+1);

becomes

w = ((x)*(x)) + 1;

z = ((w+1)*(w+1));

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