给定一个Java程序的代码片断如下:if(grade == 'A'grade == 'B') Score = 90;else if(grade == 'C'grade == 'D') Score = 70;else Score = 60;等同的switch是下列哪一个(选一项)()

A.switch(grade){ case 'A': case ' B.':score = 90; case ' C.': case ' D.':scpre = 70; default:score=60; }

时间:2023-12-06 14:29:02

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