一般情况下,我们应该避免使用小写字母,因为它很容易被误当作数字1。
Using the lowercase letter in general should be avoided, because it is easily mistaken for the number 1.
请使用小写字母作为用户名。有些服务期是字符敏感的。如果你用大写字母的话可能无法使用。
Please use only lowercase letters as usernames on this server are case sensitive, if you use uppercase letters in your username some services will be unavailable to you.
我们很可能会看到他使用小写字母写推,如果你敢跟随他,那他很可能会对你说“我想让你来做的”。
Hopefully all his tweets will not be in full capital letters, and hopefully he will let you finish if you dare to follow him.
It's passing to this function called toupper, which if you've never used it it actually does what it says it makes it touppercase.
它把这个传递给toupper函数,如果你们使用过,它表示的是把小写字母,转换为大写字母。
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