#C
Bit-Fields in C
I had not yet heard of a type (not sure if it's a type?) in C called bit-fields, or at least I can't remember anymore. Let's look at one:
struct {
unsigned int isLoggedIn : 1;
unsigned int isCustomer : 1;
unsigned int isAbove18 : 1;
} person;
each member in this struct takes up 1 bit (the : 1
indicated that). This allows for optimizing the memory needed.
As far as I read the structure will use 4 bytes, and can contain up to 32 one-bit fields, above it will use any multiple of it.
I learned this one tutorialspoint "C - Bit Fields".