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有如下类声明: class XA{ int X; public: XA(int n){x=n;} }; class XB:public XA{ int y; public: XB(int a,int b); }; 在构造函数XB的下列定义中,正确的是( )。

A.XB::XB(inta,int b):x(a),y(b){}

B.XB::XB(int a,int b):XA(a),y(b){}

C.XB::XB(int a,int b):x(a),XB(b){}

D.XB::XB(int a,int b):XA(a),XB(b){}


参考答案

更多 “ 有如下类声明: class XA{ int X; public: XA(int n){x=n;} }; class XB:public XA{ int y; public: XB(int a,int b); }; 在构造函数XB的下列定义中,正确的是( )。A.XB::XB(inta,int b):x(a),y(b){}B.XB::XB(int a,int b):XA(a),y(b){}C.XB::XB(int a,int b):x(a),XB(b){}D.XB::XB(int a,int b):XA(a),XB(b){} ” 相关考题
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