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[单选题]
有以下定义: class point{ int m,n; public: void set(int x,int y){this->m=x;this->n=y;} }; Point *pointer; 则以下哪种使用是正确的:
A.pointer->m=3;
B.cout<<pointer-> n;
C.p->set(1,2)
D.p.set(1,2)
提问人:网友shijianfu
发布时间:2022-01-07
A.pointer->m=3;
B.cout<<pointer-> n;
C.p->set(1,2)
D.p.set(1,2)
A、DERIV( int x, int y ) { BASE(x , y) ; ... }
B、DERIV( int x1, int y1 ){ x=x1; y=y1; ... }
C、DERIV( int x, int y ) : BASE( x , y ) { ... }
D、DERIV( int x, int y ) {set(x1,y1); ... }
A.q=&data.m;
B.*q=data.m;
C.q=(struct sk*)&data.m;
D.q=(struct sk*)data.m;
A、其他三个选项都不对
B、ffffffff,4294967295,1,1
C、ffffffff,4294967295,100000001,4294967297
D、ffffffff,-1,1,1
A、0
B、20
C、40
D、60
A、可缺省
B、B(int i = 0, int j = 0) :A(i), a1(j){ }
C、B(int i = 0, int j = 0) :A(i), A(j){ }
D、B(int i = 0, int j = 0) :A(i){ }
A、d.Base1::b
B、d.Base::b
C、d.b
D、d.Base::fun( )
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