Ajay Kanse

 Profile Answers by Ajay Kanse Questions by Ajay Kanse

• Jul 1st, 2007

 

When the storage is at premium , it may be necessary to pack several objects into single machine word , one common use is a set of single bit flags in application like compiler symbol tables. A bit field or field for short is a set of adjacent bits with a single implementation - defined storage unit.
struct {
     unsugned int is_keyword : 1;
     unsigned is_extern :1;
     unsigned is_static : 1 ;
} flags ;

flags.is_extern = flags.is_static = 1 ; to tun this bit on.