The area of code you are going to alter is the same area displayed in Listing 4.

将要更改的代码所在的区域与清单 4 所示区域相同。

youdao

I then create an area code block (which computes a rectangle's area) by fixing volume's first dimension (h, for height) as 1.

我创建了一个are a代码块(计算矩形的面积)，将volume的第一个维度(h用于表示高度)确定为1。

youdao

Once Custom is selected the field below will become an editable text area. Type the following code into that area.

选中Custom后，下面的字段就变为可编辑文本区域。

youdao

"They just picked us out because of our area code and ZIP Code, " she says.

WSJ: For D.C. Baseball Team, Deluge

So Nynex, hardly the most popular local telephone company in America, knew it was in for a scrap when it recently unveiled a plan to deprive some Manhattanites of their treasured 212 area code--arguably the only local telephone code that is recognised from Tokyo to Tomsk.

ECONOMIST: The sexiest code on earth

If it transfers a chunk of numbers to another area code, as it did with the Bronx, the new 646 code would not be needed, but the scheme would not create much extra space on the network.

ECONOMIST: The sexiest code on earth