#include
using namespace std;
class String
{
private:
char *m_string;
public:
String(const char *str=NULL);
String(const String &other);
~String(void);
String &operator=(const String &other);
void display()
{
cout<
}
};
String::String(const char*str)
{
cout<<"Constructing..."<
if(NULL==str)
{
m_string=new char[1];
*m_string='\0';
}
else
{
m_string=new char[strlen(str)+1];
strcpy(m_string,str);
}
}
String::~String(void)
{
cout<<"Destructing..."<
if(NULL!=m_string)
{
delete []m_string;
m_string=NULL;
}
}
String::String(const String &other)
{
cout<<"Copy Constructing.."<
m_string=new char[strlen(other.m_string)+1];
strcpy(m_string,other.m_string);
}
String & String::operator =(const String &other)
{
cout<<"Operate = Function..."<
if(&other==this)
{
return *this;
}
else
{
delete []m_string;
m_string=new char[strlen(other.m_string)+1];
strcpy(m_string,other.m_string);
return *this;
}
}
int main()
{
String string1("Hello");
string1.display();
String string2("World");
string2.display();
String string3(string1);
string3.display();
string3=string2;
string3.display();
return 0;
}
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