You notice what it did, it printed out that little, right up here I'd said enter a number and that's what it's printed out, so I can enter a number and it prints it out.
注意这个程序做了些什么,显示出了指定值,然后显示需要输入个数字,然后程序会显示这个数字,我输入一个数字然后程序显示了它。
And if you don't put a point but just put a number, this specifies the width of space that will be used by the number you're inserting there.
如果你不用点而只用数字,这个指定的长度是由,你插入的数字决定的。
You can specify numbers before d just as you can specify numbers before f.
你可以在d之前指定一个数字,你也可以在f之前制定一个数字。
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