/* bool.t   */

/*

 * On C++:  'true' and 'false' are evaluated 1 and 0 respectively.

 *      and logical AND, logical OR are evaluated boolean.

 */

/*  Valid block;    */

#define MACRO   1

#define MACRO3  3

#if MACRO == true

    Valid block;

#else

    non-Valid block;

#endif

#if (MACRO && MACRO3) == true

    Valid block;

#else

    non-Valid block;

#endif