C++ (Qt)shortF.seekp(20);shortF.put('\0');shortF.close();
C++ (Qt) stream.open("D:\\123.txt", std::ios::in); constexpr int bufferSize = 20; std::array<char, bufferSize> buffer; stream.read(buffer.data(), bufferSize); stream.close(); stream.open("D:\\123.txt", std::ios::out); stream.write(buffer.data(), bufferSize);
