I'm trying to make a program that check the ISBN number and sees if it has the correct check digit, if it doesn't have the check digit it will add one.
我试图制作一个程序，检查IS BN号码，看看它是否有正确的校验位，如果没有校验位，它将添加一个。
I'm trying to make a program that check the ISBN number and sees if it has the correct check digit, if it doesn't have the check digit it will add one.
我试图制作一个程序，检查IS BN号码，看看它是否有正确的校验位，如果没有校验位，它将添加一个。
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