void R: printo I cout<<R1<<: <<R2<<endl; void R: print( const i cout<<R1<< ;"<<R2<<endl; int main( {Ra(5,4) aprint(;∥调用 void print0 const R b(20, 52) b print();∥调用 void print0) constvoid R::print() { cout<<R1<<":"<<R2<<endl; } void R::print() const { cout<<R1<<";"<<R2<<endl; } int main() { R a(5,4); a.print(); //调用void print() const R b(20,52); b.print(); //调用void print() const } 46