有以下程序include using namespace std;class MyClass{public:MyClass(int n) { num

有以下程序#include ＜iostream＞using namespace std;class MyClass{public: MyClass(int n) { number=n; } //拷贝的构造函数 MyClass(MyClass& other) {number=other. number; } ～MyClass() { }private: int number;};MyClass fun(MyClass p){ MyClass temp(p); return temp;}int main() MyClass obj 1 (10), obj 2(0); MyClass obi 3 (obj 1); obj2=fun(obj3); return 0;}程序执行时，MyClass 类的拷贝构造函数被调用的次数是( )。

A．5

B．4

C．3

D．2

[单选题]有以下程序include using namespace std;class Complex{public: Complex(double r=O,有以下程序 #include＜iostream＞ using namespace std； class Complex { public： Complex(double r=O,double i＝0)：re(r),im(i){} double real() const {return re；} double imag()const {return i

[单选题]有以下程序:include using namespace std;class A{private:int a;public:A (int i){a有以下程序： #include ＜iostream＞ using namespace std; class A { private: int a; public: A (int i) { a=i; } void disp() { cout＜＜a＜＜","; } }; class B { private: int b; public: B(int

[单选题]有以下程序:include using namespace std;class sample {private: iht n;public: sam有以下程序： #include ＜iostream＞ using namespace std; class sample { private: iht n; public: sample(){} sample(int m) { n=m; } void addvalue(int m) { sample s; s.n=n+m; *this=s; } vo

[单选题]有以下程序:include using namespace std;class Base{public:Base(){}virtual void w有以下程序： #include ＜iostream＞ using namespace std; class Base { public: Base(){} virtual void who() { cout＜＜"Base Class"＜＜end1; } ～Base(){} }; class Derivel : public Base { publ

[单选题]有以下程序:include using namespace std;class sample{private:intn;public:sample(有以下程序：#include ＜iostream＞using namespace std;class sample{private: int n;public: sample() {} sample(int m) { n=m; } sample add(sample s1,sample s2) { this-＞n-s1.n+s2.n; return

[单选题]有以下程序include using namespace std:class Base{private:char c;public:Base(cha有以下程序#include ＜iostream＞using namespace std:class Base{private: char c;public: Base(char n) :c(n) {} ～Base ( ) { cout＜＜c; }}; class Derived : public Base{private: char c;public

[单选题]有以下程序;include using 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 print () const; private: int R1, R2; }; void R::print ()

[单选题]有以下程序:include using namespace std;class sample{private:int n;public:sample有以下程序： #include ＜iostream＞ using namespace std; class sample { private: int n; public: sample(){} sample(int m) { n=m; } void addvalue(int m) { sample s; s.n=n+m; *this=s; } vo

[单选题]有以下程序include using namespace std;class MyClass{public: MyClass(int n) { nu有以下程序 #include ＜iostream＞ using namespace std; class MyClass { public: MyClass(int n) { number=n; } // 拷贝构造函数 MyClass(MyClass& other) {number=other. number;} -MyClass() {}

[单选题]有以下程序:include using namespace std;class sample{private: int n;public: samp有以下程序： #include ＜iostream＞ using namespace std; class sample { private: int n; public: sample(){} sample (int m) { n=m; } sample add(sample s1,sample s2) { this-＞n=s1.n+s2.n; r