Character type checking: If special character is not allowed then give some special character, negative values and make sure proper error message has been thrown by the system.
字符类型检查:如果不允许特殊字符,那么就用一些特殊字符、负数并确保系统提示正确的出错信息。
Character type checking: If special character is not allowed then give some special character, negative values and make sure proper error message has been thrown by the system.
字符类型检查:如果不允许特殊字符,那么就用一些特殊字符、负数并确保系统提示正确的出错信息。
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