program

[peter]

hello and thanks for your help - see prog below
even though thr program below compile i think i have my print object and

my main needs to some changes cause it will not link
can you please help

thanks P

define dogyrs = 7 ; // mult a # by 7 to actual dog years
#include <iostream>
using namespace std;


int dage,human_yrs, amt_pups;

class Dog //base
{
public:
Dog(const string & dgname , const string & dgtype);
Dog(const Dog & rhs);
Dog();
~Dog();

Dog & operator= (const Dog &rhs);
Dog & operator+= (const Dog &rhs);

int Dogage(int &human_yrs);
//int Set_Dogage();
bool have_litter( int & amt_pups);
void Dog_bark();
void DogPrint();

private:
string name_;
string type_;
int age_;
bool pups_;

};

#include "hdog.h"
#include <iostream>

void main()
{

Dog obj1("rex","lab");

int theage;
cout << " enter dog's age" << endl;
cin >> theage;


obj1.Dogage(theage);

obj1.DogPrint() ;
}

#include "hdog.h"
#include <iostream>
#include <string>
using namespace std;

Dog::Dog(const string & dgname , const string & dgtype )
:name_(dgname), type_(dgtype), pups_(false)
{
age_ = dage;
}

Dog::Dog(const Dog & rhs)
:name_(rhs.name_), type_(rhs.type_), age_(rhs.age_), pups_(rhs.pups_)
{
}

Dog::Dog()
:name_("default name"), type_("mongrel"), age_(0), pups_(false)
{
}

Dog & Dog::operator = (const Dog &rhs)
{
// do check no same name

name_ = rhs.name_;
type_ = rhs.type_;

return * this;
}

Dog & Dog::operator+= (const Dog & rhs)
{
return * this;
}

int Dog::Dogage( int &human_yrs)
{
dage = human_yrs * 7;//dogyrs;
age_ = dage;
return age_;
}

bool Dog::have_litter( int & amt_pups)
{
int puppies;
puppies = amt_pups;
if (!pups_ )
{
cout << " I already have " << puppies << "lil ones" << endl;
cout << "cannot have anymore" << endl;
pups_ = true;
return true;
}
else if (pups_ && puppies > 0)
{
puppies = amt_pups;
cout << " I now have " << puppies<<" lil ones" << endl;
pups_ = true;
return true;
}
else
{
cout << " i have no puppies " << endl;
return false;
}
}

void Dog::Dog_bark()
{
cout << "woof ! woof !" << endl;
}

void Dog::DogPrint()
{
cout <<" my name is "<< name_ << " i'm a "<<type_ << " i am "<< "\n"
<< Dogage(human_yrs) <<" years old "<< have_litter(amt_pups) << endl;
Dog_bark() ;
}

[vishal kochhar]

There are two errors I can spot. But first, another important thing: your
main() function should return int and not void:

1) define dogyrs = 7;

should be
#define ....

2) you have not defined the destructor Dog::~Dog(). Do one of these depending
upon logic:
a) Remove its decleration from the header file. Seems like most appropriate
as your destructor is doing nothing.
b) In the header file, change ~Dog(); to ~Dog() {}
c) Add in the cpp file Dog::~Dog() {} member function definition

Vishal

"peter" <peter.l.ridgard@verizon.com> wrote:
>
>hello and thanks for your help - see prog below
>even though thr program below compile i think i have my print object and
>
>my main needs to some changes cause it will not link
>can you please help
>
>thanks P
>
>define dogyrs = 7 ; // mult a # by 7 to actual dog years
>#include <iostream>
> using namespace std;
>
>
>int dage,human_yrs, amt_pups;
>
>class Dog //base
>{
>public:
> Dog(const string & dgname , const string & dgtype);
> Dog(const Dog & rhs);
> Dog();
> ~Dog();
>
> Dog & operator= (const Dog &rhs);
> Dog & operator+= (const Dog &rhs);
>
> int Dogage(int &human_yrs);
> //int Set_Dogage();
> bool have_litter( int & amt_pups);
> void Dog_bark();
> void DogPrint();
>
>private:
> string name_;
> string type_;
> int age_;
> bool pups_;
>
>};
>
>#include "hdog.h"
>#include <iostream>
>
>void main()
>{
>
> Dog obj1("rex","lab");
>
> int theage;
> cout << " enter dog's age" << endl;
> cin >> theage;
>
>
> obj1.Dogage(theage);
>
> obj1.DogPrint() ;
>}
>
>#include "hdog.h"
>#include <iostream>
>#include <string>
>using namespace std;
>
>Dog::Dog(const string & dgname , const string & dgtype )
>:name_(dgname), type_(dgtype), pups_(false)
>{
> age_ = dage;
>}
>
>Dog::Dog(const Dog & rhs)
>:name_(rhs.name_), type_(rhs.type_), age_(rhs.age_), pups_(rhs.pups_)
>{
>}
>
>Dog::Dog()
>:name_("default name"), type_("mongrel"), age_(0), pups_(false)
>{
>}
>
>Dog & Dog::operator = (const Dog &rhs)
>{
> // do check no same name
>
> name_ = rhs.name_;
> type_ = rhs.type_;
>
> return * this;
>}
>
>Dog & Dog::operator+= (const Dog & rhs)
>{
> return * this;
>}
>
>int Dog::Dogage( int &human_yrs)
>{
> dage = human_yrs * 7;//dogyrs;
> age_ = dage;
> return age_;
>}
>
>bool Dog::have_litter( int & amt_pups)
>{
> int puppies;
> puppies = amt_pups;
> if (!pups_ )
> {
> cout << " I already have " << puppies << "lil ones" << endl;
> cout << "cannot have anymore" << endl;
> pups_ = true;
> return true;
> }
> else if (pups_ && puppies > 0)
> {
> puppies = amt_pups;
> cout << " I now have " << puppies<<" lil ones" << endl;
> pups_ = true;
> return true;
> }
> else
> {
> cout << " i have no puppies " << endl;
> return false;
> }
>}
>
>void Dog::Dog_bark()
>{
> cout << "woof ! woof !" << endl;
>}
>
>void Dog::DogPrint()
>{
> cout <<" my name is "<< name_ << " i'm a "<<type_ << " i am "<< "\n"
> << Dogage(human_yrs) <<" years old "<< have_litter(amt_pups) << endl;
> Dog_bark() ;
>}
>
>