用变形补码计算x+y,x-y,并判断是否溢出
A.x=101011,y=000011 B.x=101011,y=-101111 C.x=-101100,y=010001 D,x=-101101,y=-001010, E:x=-101101,y=-001010,那位大哥救命啊
A.x=101011,y=000011 B.x=101011,y=-101111 C.x=-101100,y=010001 D,x=-101101,y=-001010, E:x=-101101,y=-001010,那位大哥救命啊
