Tested g++/libstdc++ and clang++/libc++ and both operate identically to the C test above, testing `std::cout << "a line of output\n";` vs. `std::cout << "a bit

Tested g++/libstdc++ and clang++/libc++ and both operate identically to the C test above, testing `std::cout << "a line of output\n";` vs. `std::cout << "a bit of output. ";` (and with explicit flushes using `std::cout << "a line of output" << std::endl;` and std::cout << "a bit of output. " << std::flush;). So I'm correct on those targets as well.