位域声明

#include <stdio.h>

#include <string.h>



struct {

   unsigned int age : 3;

} Age;



int main( ) {



   Age.age = 4;

   printf( "Sizeof( Age ) : %d\n", sizeof(Age) );

   printf( "Age.age : %d\n", Age.age );



   Age.age = 7;

   printf( "Age.age : %d\n", Age.age );



   Age.age = 8;

   printf( "Age.age : %d\n", Age.age );



   return 0;

}