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Questions tagged unions

19 questions

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11
votes
4
answers

What is the difference between a proper defined union and a reinterpret_cast?

c++ unions reinterpret-cast
asked 2013-07-29T12:16:13.040
31
votes
6
answers

How to use c union nested in struct with no name

c++ c struct unions anonymous
asked 2012-11-29T11:27:55.347
14
votes
4
answers

How to access a struct member inside a union in C?

c unions structure
asked 2012-09-29T14:21:34.440
41
votes
5
answers

Union initialization in C++ and C

c++ c initialization unions c++03
asked 2012-07-19T07:16:09.893
9
votes
2
answers

How Do I Properly Declare a ctype Structure + Union in Python?

python struct byte ctypes unions
asked 2012-04-27T07:18:35.523
9
votes
0
answers

Real life example of C UNIONS

c unions
asked 2011-08-29T09:06:05.540
11
votes
3
answers

Union of same type in C++

c++ unions
asked 2011-06-28T20:31:15.850
29
votes
2
answers

Memory layout of union of different sized member?

c unions
asked 2011-06-15T02:03:08.427
56
votes
7
answers

Anonymous union within struct not in c99?

c gcc struct c99 unions
asked 2010-07-12T11:35:40.727
9
votes
4
answers

c union and bitfields

c bit-fields unions
asked 2010-06-21T17:47:33.323
14
votes
3
answers

Using unions to simplify casts

c data-structures unions
asked 2010-05-20T18:45:42.757
10
votes
2
answers

How to cast C struct just another struct type if their memory size are equal?

c casting struct unions
asked 2010-05-02T09:28:48.823
346
votes
18
answers

Purpose of Unions in C and C++

c++ c unions type-punning
asked 2010-02-22T11:17:19.760
96
votes
9
answers

What does "request for member '*******' in something not a structure or union" mean?

c struct unions
asked 2010-02-02T13:46:10.637
73
votes
10
answers

How to compile C code with anonymous structs / unions?

c++ c unions anonymous-class anonymous-struct
asked 2009-12-28T23:05:17.960
39
votes
6
answers

A question about union in C - store as one type and read as another - is it implementation defined?

c undefined undefined-behavior unions
asked 2009-11-28T11:54:31.480
11
votes
8
answers

Strange C++ boolean casting behaviour (true!=true)

c++ casting boolean unions
asked 2009-08-09T20:06:20.743
32
votes
1
answers

Union element alignment

c alignment unions
asked 2009-05-21T05:14:06.633
21
votes
12
answers

Union – useless anachronism or useful old school trick?

c++ c data-structures unions
asked 2009-05-13T13:47:06.333