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有如下程序:include using namespace std;class Demopublic:{ Demo () { cout << "de

有如下程序: #include <iostream> using namespace std; class Demo public: { Demo () { cout << "default constructor\n"; } Demo (const Demo &x){ cout << "copy constructor\"; } }; Demo userCode(Demo b){ Demo c(b);return c; } int main() { Demo a,d; cout<<"calling userCode()\n"; d=aserCode(a); return 0; }执行上面程序的过程中,构造函数Demo()和Demo(const Demo &x)被调用的次数分别是 ______ 。

A.1和1

B.1和2

C.2和3

D.2和4


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更多 “ 有如下程序:include using namespace std;class Demopublic:{ Demo () { cout 有如下程序: #include <iostream> using namespace std; class Demo public: { Demo () { cout << "default constructor\n"; } Demo (const Demo x){ cout << "copy constructor\"; } }; Demo userCode(Demo b){ Demo c(b);return c; } int main() { Demo a,d; cout<<"calling userCode()\n"; d=aserCode(a); return 0; }执行上面程序的过程中,构造函数Demo()和Demo(const Demo x)被调用的次数分别是 ______ 。A.1和1B.1和2C.2和3D.2和4 ” 相关考题
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