#define

#define PI 3.14

#define FOO(x,y) ((x) + (y))

main

cout << PI << endl;

cout << FOO(3, 4) << endl;

3.14

7

#define begin {

#define end }

#define tab "\t"

main

if (5 > 2)

begin

     cout << tab << "ok" << endl;

end

     ok