Hello, I have just installed Red Hat 9 (Fresh installation on a dual boot system with Win XP) on my system. For some reason g++ compiler is giving me errors, even for the simple "Hello world" program. #include <iostream> int main() { cout << "hello world"; return EXIT_SUCCESS; } Below is the compilation error I am facing. $ g++ test.cpp test.cpp:5: 'cout' undeclared (first use this function) test.cpp:5: (Each undeclared identifier is reported only once for each function it appears in.) Your help is highly appreciated. Regards H@z@n