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    I agree with most of what you write, but the last paragraph makes things a little to simple. Header files still serve a useful purpose for defining public interfaces. Commented Dec 29, 2012 at 15:54
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    @honk That's what I was getting at with my question. But I think that modern IDEs (as suggested by ElYusubov) kind of negate this. Commented Dec 29, 2012 at 16:13
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    You could add that the C++ committee is working on Modules which would make C and C++ be able to work without any headers OR with headers used in a more efficient way. That would make this answer more fair. Commented Dec 29, 2012 at 16:46
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    @MattFichman: Generating some header file is one thing (which most programmer's editors/IDE's can do automatically in some way), but the point about a public API is that it effectively needs to be defined and designed by an actual human. Commented Dec 29, 2012 at 18:46
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    @honk Yes. But there is no reason for this to be defined in separate files. It can be in same code as implementation. Just like C# is doing it. Commented Dec 29, 2012 at 20:33