inheritance help...

hi, i was making a simple program that takes 2 floats in a base class then adds them through a dirived class, i complied and got no errors, but when i enter the numbers i get that wacky 2.1 -n 10 X 233.43454 some weird off the wall number...

anyways heres my code, i would appreciate a little guidence :)

Code:

---

#include <iostream>
using namespace std;

class Base
{
public:
void setNums(float, float);
float a;
float b;
};
void Base::setNums(float y, float u)
{
y = a;
u = b;
}

class Addy : public Base
{
public:
void add();
};
void Addy::add()
{
float sum = a + b;
cout<<"The sum is"<<sum<<endl;

}

int main()
{
float h = 0;
float g = 0;
Base a;
Addy b;

cout<<"Enter 2 floaters \n";
cin>>h>>g;

a.setNums(h,g);
b.add();

return 0;
}

---

Should

Code:

---


void Base::setNums(float y, float u)
{
y = a;
u = b;
}

---

be

Code:

---


void Base::setNums(float y, float u)
{
a = y;
b = u;
}

---

Could get some funny results otherwise ;)

nope.... damn this is annoying.... anyone know?

>anyone know?
b and a are unrelated, change

Code:

---

a.setNums(h,g);

---

to

Code:

---

b.setNums(h,g);

---

As it is b's data members are uninitialized and you're trying to work with them. This is undefined behavior, so anything could happen. You should also follow minesweeper's advice. :)

oh man noobie error! thanks alot! it worked :)

Code:

---

class Base
{
public:
void setNums(float, float);
float a;
float b;
};
should be
class Base
{
public:
void setNums(float, float);
protected:
float a;
float b;
};

---