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基本
- 假设有3个用户,用户名分别为a,b,c。密码分别为111,222,333。
- 请编写一个程序,首先输入用户名,如果用户名错误请输出"用户不存在!",程序结束。如果用户名正确,提示输入对应密码,密码正确输出"欢迎!",密码错误输出"密码错误!"。
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提高
- 密码有3次输入机会,输入全错输出"密码错误!"
- 用户名有3次输入机会,输入全错输出"用户不存在!",程序结束,输入正确再去验证密码,密码3次输入机会。
cexercises's Introduction
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