Hi, I'm running my C++ program on Cygwin, using g++ compiler version 5.2.0. The std::string is hiding the output of std::cout. For example, this simple program should show an output, but it's showing any: #include <iostream> int main() { std::string as = " 12345"; std::cout << "ABC" << as << std::endl; return 0; } We should see "ABC 12345" but instead, we see "". I don't know if the issue is on my side or on the g++/gcc side. Did I do something wrong?