Error Array Type Is Not Assignable
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Array Type Char 20 Is Not Assignable
like you, helping each other. Join them; it only takes a minute: Sign up char array not assignable up vote 1 down vote favorite 1 Okay, so I want to save a word in a char array but it gives me a error Here's my code #include
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Array Type Double Is Not Assignable
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Array Type Char Is Not Assignable C++
other. Join them; it only takes a minute: Sign up Why are arrays not assignable in C/C++? [duplicate] up vote 10 down vote favorite 1 This question already has an answer here: Why does C++ support memberwise assignment http://stackoverflow.com/questions/27867437/char-array-not-assignable of arrays within structs, but not generally? 4 answers One can assign a struct to another, which results in copying all the values from struct to another: struct { int a, b, c; } a, b; ... a = b; But why are arrays not assignable like that: int a[3], b[3]; ... a = b; Because, strictly speaking, are structs just arrays with variable sized elements, so why is that not allowed? This kind of assignment is http://stackoverflow.com/questions/25230714/why-are-arrays-not-assignable-in-c-c unused anyway. Sure, it may seem like only the addresses are involved, but one can easily copy arrays that way ("statically"). c++ c arrays struct copy-assignment share|improve this question edited Aug 11 '14 at 0:32 Cody Gray 145k23277368 asked Aug 10 '14 at 16:30 Kapichu 667316 marked as duplicate by Jacob Krall, Cody Gray, Ed S.c++ Users with the c++ badge can single-handedly close c++ questions as duplicates and reopen them as needed. Aug 10 '14 at 16:34 This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question. 1 There's an easy way around it: use std::array. –chris Aug 10 '14 at 16:35 That would also be convenient because you could assign strings to char arrays (not only pointers!) char array[4] = "hi!";, but also array = "bye";! –Kapichu Aug 16 '14 at 16:35 add a comment| 1 Answer 1 active oldest votes up vote 4 down vote Quoting from this answer: C is written in such a way that the address of the first element would be computed when the array expression is evaluated. This is why you can't do something like int a[N], b[N]; a = b; because both a and b evaluate to pointer values in that context; it's equivalent to writing 3 = 4. There's nothing in
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack http://stackoverflow.com/questions/25987133/array-type-is-not-assignable Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up array type is not assignable up vote 2 down vote favorite I need to create two references is not to an array which could be refer to the same array. I tried the following: extern int (&a)[]; extern int (&b)[]; int main() { b = a; // error: array type 'int []' is not assignable } Is there a way to do that in c++? c++ arrays share|improve this question asked Sep 23 '14 at 4:52 Dmitrii Bundin 5,67562258 6 You can't re-bind references. Could you be more clear is not assignable on what you're trying to accomplish? –Brian Sep 23 '14 at 4:57 3 You could write int a[5]; int (&b)[5] = a; int (&c)[5] = a; –M.M Sep 23 '14 at 4:59 Why not use pointer in such case? –Mine Sep 23 '14 at 5:02 What is the context for this, perhaps a different approach would be better. –Ben Sep 23 '14 at 5:40 @Brian Why can't we rebind references? Because of the Standard? –Dmitrii Bundin Sep 24 '14 at 4:40 | show 1 more comment 1 Answer 1 active oldest votes up vote 5 down vote accepted Two things: first arrays cannot appear on the left hand of an assignment operator. cppreference probably takes its text directly from the standard, particularly: § 8.3.4 5 Objects of array types cannot be modified, see 3.10. Also, like cppreference says, arrays are lvalues: § 3.10 1 Expressions are categorized according to the taxonomy in Figure 1. — An lvalue (so called, historically, because lvalues could appear on the left-hand side of an assignment expression) designates a function or an object. Although, the standard explicitly says that objects of array types cannot be modified, therefore concluding that arrays (which are objects) cannot appear on the left hand side