Prompting

To prompt a user for information you use the IO.readln function.

IO.readln takes a String to output as a prompt. This will work the same as if the String was passed to IO.print.

The program will then wait until a human types some text and clicks the enter key. Whatever they typed will be returned to the program as a String.

void main() {
    String name = IO.readln("What is your name? ");
    IO.println("Hello, " + name);
}

readln stands for "read line." It reads the next line a person types on "standard input".