gistfile1.txt

#include <stdio.h>


int main(int argc, char* argv[])
      {
  	union U {
		        int subtype;
		        struct {
		              int _accidentalType:4;
		              int _naturalType:4;
		              unsigned _customType:16;
		              bool _custom : 1;
		              bool _invalid : 1;
		              };
		        };
		  U a;
		  a.subtype       = 15;
		  printf("_accidentalType %d\n" , a._accidentalType);
		  printf("_naturalType %d\n" , a._naturalType);
		  printf("_customType %d\n" , a._customType);
		  printf("_custom %d\n" , a._custom);
		  printf("_invalid %d\n" , a._invalid);
	}