结果：0
X=A,Y=B是两条赋值语句,不要把它和X==A,Y==B搞混了；根据运算优先级&&比||先执行,那么(Y=B)&&0的值为0；||左边!(X=A)值也为0；两个0或起来最终结果为0
若A=2,B=4,则表达式!(X=A)||(Y=B)&&0的值,
若A=2,B=4,则表达式!(X=A)||(Y=B)&&0的值,
数学人气：762 ℃时间：2020-05-22 05:26:20
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