Input/Output View
The Input/Output view accepts user input and displays program output. This view is closed by default, but is available if your program requires user input or you want to enter or view program output in the UI, rather than in the terminal. You can also switch between the UI and the terminal; all input and output is reflected both in the UI and the terminal.
To open it, select Window > Views > Input/Output.
Input displays in green text, while output displays in blue text. Errors display in red.