wcin gets wrong character input?

Question

The following code:

#include <iostream> using std::wcin; using std::wcout; using std::locale; int main() { locale::global(locale("Portuguese_Brazil")); wcout << "wcin Test using \"ção\": "; // shows that wcout works properly wchar_t wcinTest[] = L""; wcin >> wcinTest; wcout << wcinTest << " should be \"ção\"."; return 0; }

Results in:

wcin Test using "ção": ção ╬Æo should be "ção".

The ╬ character is U+2021 or 8225, and the ç is U+00E7 or 231.

I changed mult-bytes option, set and not set UNICODE in project properties. Nothing worked.

I already set the console font into Consolas, a true type font capable of displaying the ç character correctly.

I'd like this as simple and reproducible possible to use as a standard practice for future UNICODE console applications.

Any ideas?

StoryTeller - Unslander Monica · Accepted Answer · 2013-02-12 12:14:28Z

4

wcinTest is a wchar_t buffer of length 1;

You overflow it when you read into it. Use a std::wstring insead.

answered Feb 12, 2013 at 12:14

StoryTeller - Unslander Monica

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2 Comments

orlando2bjr Over a year ago

Still, no good. Same result with wstring. This is what I tried: ' #include <iostream>' #include <string> using std::wcin; using std::wcout; using std::wstring; using std::locale; //using namespace std; int main() { locale::global(locale("Portuguese_Brazil")); wcout << "wcin Test using \"ção\": "; wstring wcinTest; wcin >> wcinTest; wcout << wcinTest << " should be \"ção\"."; return 0; }`

orlando2bjr Over a year ago

I think I'm on to something. I just realized that I broke my cin while fixing my cout output with locale("Portuguese_Brazil"). I removed that and use #include <Windows.h> and everything works!

orlando2bjr · Accepted Answer · 2013-02-12 22:28:33Z

This finally worked:

#include <iostream> #include <string> #include <Windows.h> using std::cin; using std::cout; using std::string; int main() { SetConsoleOutputCP(1252); SetConsoleCP(1252); cout << "wcin Test using \"ção\": "; // shows that wcout works properly string wcinTest; cin >> wcinTest; cout << wcinTest << " should be \"ção\"."; return 0; }

I'm too newbie to understand why I need both SetConsoleOutputCP and SetConsoleCP. I though maybe just SetConsoleCP would fix everything, but no, I need both: SetConsoleOutputCP fixed cout; and SetConsoleCP fixed cin.

Thanks anyway @StoryTeller

I agree, but it solved my specific issue, even if I had to drop the utf8 for that. Current C++ handles this much better and the console just needs to use unicode font.

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