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有如下的程序:include include using namespace std;class MyString{

有如下的程序:#include <cstring.h>#include <iostream. h>using namespace std;class MyString{ public: MyString(const char*s); ~MyString() { delete[]data; } protected: unsigned len; char*data;};MyString::MyString(const char *s){ len=strlen(s); data=new char[len+ 1]; strcpy(data, s);}int main(){ MyString a("C++ Programing"); MyString b(a); return0;}在运行上面的程序时出错,出错的原因是( )。

A.构造函数的实参不允许是本类的对象

B.没有定义实现深层复制(深拷贝)的复制构造函数

C.构造对象a时实参与形参类型不符

D.系统不能生成默认的复制构造函数


参考答案

更多 “ 有如下的程序:include include using namespace std;class MyString{ 有如下的程序:#include <cstring.h>#include <iostream. h>using namespace std;class MyString{ public: MyString(const char*s); ~MyString() { delete[]data; } protected: unsigned len; char*data;};MyString::MyString(const char *s){ len=strlen(s); data=new char[len+ 1]; strcpy(data, s);}int main(){ MyString a("C++ Programing"); MyString b(a); return0;}在运行上面的程序时出错,出错的原因是( )。A.构造函数的实参不允许是本类的对象B.没有定义实现深层复制(深拷贝)的复制构造函数C.构造对象a时实参与形参类型不符D.系统不能生成默认的复制构造函数 ” 相关考题
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