On 04/01/2023 06:46, Chris Angelico wrote:
I've known some systems to have a trigger of "reading on FD 0 flushes
FD 1"
C++ has this feature:
Quote from https://en.cppreference.com/w/cpp/io/cin
"Once |std::cin| is constructed, std::cin.tie() returns &std::cout
<http://en.cppreference.com/w/cpp/io/cout>, and likewise,
std::wcin.tie() returns &std::wcout
<http://en.cppreference.com/w/cpp/io/cout>. This means that any
formatted input operation on |std::cin| forces a call to std::cout
<http://en.cppreference.com/w/cpp/io/cout>.flush() if any characters are
pending for output."
Barry
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