Question

After #include , what namespace contains the symbol cout?

A) std
B) io
C) system
D) main

Answer 1

After including the iostream library in C++, the symbol 'cout' is found within the 'std' namespace which stands for 'standard'.

Step-by-step explanation:

After #include <iostream>, the namespace that contains the symbol cout is A) std. In C++, the iostream library includes definitions for input and output streams. The cout object, which stands for "console output," is part of this library and is used to output data to the standard output device, typically a screen. The cout object is part of the standard (std) namespace and is often used in conjunction with the std:: prefix, unless the using directive is used to bring it into the current namespace scope.