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P的答案

下面程序段的功能是( )
PUSH a   
PUSH b   
POP a   
POP b

单选题
2022-04-02 18:05
A、b的内容给a
B、a的内容给b
C、a、b内容互换
D、a、b内容不变
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正确答案
C

试题解析

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