index: 
hello1
hello2
hello3
hello4
source: hello.zip
hello4.cpphello4.cpp introduces a member function and tests the
copy operation.
#include <iostream>
#include <string>
using namespace std;
class theWorld {
public:
theWorld() { instance = count++; cout << "Hello from " + worlds[instance] << endl; }
~theWorld() { cout << "Goodbye from " + worlds[instance] << endl; }
void tell() { cout << "I am " + worlds[instance] << endl; }
int instance;
public:
static string worlds[];
static int count;
};
string theWorld::worlds[] =
{"Mercury","Venus","Earth","Mars","Jupiter","Saturn","Uranus","Neptune"};
int theWorld::count = 0;
theWorld myWorld;
int main()
{
cout << "Hello from main program.\n";
theWorld *pworld = new theWorld();
{
theWorld localWorld;
}
theWorld copy = *pworld;
delete pworld;
copy.tell();
cout << "Goodbye from main program.\n";
cout << "We named " << theWorld::count << " worlds\n";
return 0;
}
C:\classes\ece538\work\hello>hello4 Hello from Mercury Hello from main program. Hello from Venus Hello from Earth Goodbye from Earth Goodbye from Venus I am Venus Goodbye from main program. We named 3 worlds Goodbye from Venus Goodbye from Mercury
Maintained by John Loomis, updated Tue Jan 23 20:45:12 2007