單項(xiàng)選擇題有以下說(shuō)明語(yǔ)句:struct point{int x;int y;}p;則正確的賦值語(yǔ)句是()

A.point.x=1;point.y=2;
B.point={1,2};
C.p.x=1;p.y=2;
D.p={1,2};


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1.單項(xiàng)選擇題判斷元素x∈A對(duì)應(yīng)的表達(dá)式是()

A.~A
B.A==0
C.A&(~(A&B))
D.1<<(x-1)&A==1<<(x-1)

2.單項(xiàng)選擇題實(shí)現(xiàn)集合運(yùn)算求補(bǔ)集~A運(yùn)算的對(duì)應(yīng)表達(dá)式是()

A.~A
B.A==0
C.A&(~(A&B))
D.1<<(x-1)&A==1<<(x-1)

3.單項(xiàng)選擇題實(shí)現(xiàn)集合運(yùn)算AB運(yùn)算的對(duì)應(yīng)表達(dá)式是()

A.A∣B
B.A&B
C.A&(~(A&B))
D.A∣B==B

4.單項(xiàng)選擇題實(shí)現(xiàn)集合運(yùn)算A-B運(yùn)算的對(duì)應(yīng)表達(dá)式是()

A.A∣B
B.A&B
C.A&(~(A&B))
D.A∣B==B

5.單項(xiàng)選擇題實(shí)現(xiàn)集合運(yùn)算A&B運(yùn)算的對(duì)應(yīng)表達(dá)式是()

A.A∣B
B.A&B
C.A&(~(A&B))
D.A∣B==B