GCC and cerr stream [closed]

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I want to write program to test another programs using gcc. And I want to compile *.cpp file using gcc and if when on compiling was error i want to know about it.

GCC gives into cerr stream something?

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Yes, GCC outputs warnings and errors to standard error stream.

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Did you use g++ (not gcc) to compile your C++ code? Did you link the standard C++ library?

Try passing the -v option to g++ to understand what it is doing.