Objective C Struct Syntax

Question

I want to understand the syntax of the struct which i have seen some where. Can some please explain the meaning of unsigned int xyz:1;. Is it just assigning default value to a variable xyz? BTW this code is in Objective C.

struct
        {
            unsigned int xyz:1;
    } testStruct;

It's called "bit field" and available from C, not only Objective-C. — Larme, Jul 09 '15 at 07:02

score 2 · Accepted Answer · answered Jul 09 '15 at 07:04

2

It's a bit field. You are telling the structure that you will only be using one bit of xyz.

This allows the compiler to make packing optimisations.

answered Jul 09 '15 at 07:04

Bathsheba

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Objective C Struct Syntax

1 Answers1