您首先看到提示符号 > 。

The first thing you will see is the prompt sign >.

youdao

你可以在萤幕上看到c：的提示符号吗？

Can you see the c: prompt on the screen?

youdao

当电池电压过低时，屏幕上有低电压提示符号。

When the battery voltage is too low, a low voltage on the screen prompt.

youdao

But the take away for now is that if you don't clue -lcs50, -- you get some mention -- some error message -- about "undefined symbol," and that should be your clue that, "Oh it's undefined in that I haven't told the compiler that I want to link in these zeros and ones."

但现在如果你删除“-lcs50“,你们会得到一些提示--一些错误信息-,像“未定义的符号“，这可以为你提过线索，“这个没有被定义，我没有告诉编译器,把想把这个与“1“和“0“建立连接，“

哈佛公开课 - 计算机科学课程节选