1*31615c96Sdholland 1. 2*31615c96Sdholland #define A(a) a 3*31615c96Sdholland A(); 4*31615c96Sdholland 5*31615c96Sdholland 2. 6*31615c96Sdholland #define B(a, b) (a,b) 7*31615c96Sdholland B(a, ); 8*31615c96Sdholland B(, b); 9*31615c96Sdholland B( , ); 10*31615c96Sdholland B(a,); 11*31615c96Sdholland B(,b); 12*31615c96Sdholland B(,); 13*31615c96Sdholland 14*31615c96Sdholland 3. 15*31615c96Sdholland #define C(a, b, c) (a,b,c) 16*31615c96Sdholland C(a, b, ); 17*31615c96Sdholland C(a, , c); 18*31615c96Sdholland C(, , c); 19*31615c96Sdholland C(a, , ); 20*31615c96Sdholland C(, b, ); 21*31615c96Sdholland C(, , c); 22*31615c96Sdholland C(, , ) 23*31615c96Sdholland C(a,b,); 24*31615c96Sdholland C(a,,c); 25*31615c96Sdholland C(,,c); 26*31615c96Sdholland C(a,,); 27*31615c96Sdholland C(,b,); 28*31615c96Sdholland C(,,c); 29*31615c96Sdholland C(,,) 30