Fill in the blanks to define the macro SQR if the TRIPLE macro is defined, otherwise define TRIPLE.

Question

#______TRIPLE
#define SQR(x) (x) * (x)
#______
#define TRIPLE(x) (x) * 3
#________

Answer 1

Why don't you try to solve it yourself?

Answer 2

#ifdef TRIPLE
#define SQR(x) (x) * (x)
#else
#define TRIPLE(x) (x) * 3
#endif

Answer 3

Have a look at preprocessor directives: between them ifdef, else, endif