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Evaluates an expression and, when the result is false, prints a diagnostic message and aborts the program.
判断一个表达式,如果结果为假,输出诊断消息并中止程序。
youdao
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Evaluates an expression and, when the result is false, prints a diagnostic message and aborts the program.
判断一个表达式,如果结果为假,输出诊断消息并中止程序。
youdao