Usually with just two, maybe three characters, a character that you can't really see as well on the screen, otherwise, so a new line character.

通常需要两到三个字符，这些字符你们在屏幕上是,看不到的，这个是换行字符。

哈佛公开课 - 计算机科学课程节选

So input is an int called F, print out to the screen or your piece of paper the value of C. Odds are you only need two, maybe three lines of code for this, but the goal ultimately will be try it on your own.

所以输入是一个int类型的F，在你的屏幕上,或你们的纸上打印出C的数值,可能你们需要两行或者三行的代码,但是最终的目标需要你自己独自尝试。

哈佛公开课 - 计算机科学课程节选