若有以下程序段,则执行以下语句后 x,y 的值是分别是( ) int x=1,y=2; x=x^y; y=y^x; x=x^y;
A.
x=1,y=2
B.
x=2,y=2
C.
x=2,y=1
D.
x=1.y=1
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