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有以下程序:includeusing namespace std;class R{public:R(int r1,int r2){R1=r1;R2=

有以下程序: #include<iostream> using namespace std; class R { public: R(int r1,int r2) { R1=r1; R2=r2; } void print(); void print0const; private: int R1,R2; }; void R::print() { cout<<R1<<","<<R2<<endl; } void R::print() const { cout<<Rl<<","<<R2<<endl; } int main() { R a(5,4); const R b(20,52); b.print(); return 0; } 执行后的输出结果是( )。

A.5,4

B.20,52

C.0,0

D.4,5


参考答案

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