In many environments, this program "works," and it compiles, executes, and prints "Hello, world. \ n" to the screen.
此程序可以在许多环境中“运行”，它编译、执行并将“Hello, world . \ n”打印到屏幕。
2
The sample model you're going to use is a simple HelloWorld program, which does what all HelloWorld programs do and prints "Hello World" to the screen.
你将要用到的样例模型是一个简单的HelloWorld程序，和所有的HelloWorld程序一样，这个程序是把“ Hello World ”输出到屏幕。
3
It’s one thing to write “Hello World, ” but it’s another to understand how the words appear on the screen.