1. Determine the output of each of the following program when it is executed. (a)
#include
using namespace std; class baseA {
public:
int a;
void setdata(); void display();
};
class derivedB : baseA
{
public:
int b;
void setdata(); void display();
};
void baseA :: setdata()
{
a = 10;
}
void baseA :: display()
{
cout <><>
}
void derivedB :: setdata()
{
b = 20;
}
void derivedB :: display()
{
cout <><>
}
int main()
{
}
(b)
derivedB obj; obj.setdata(); obj.display(); return 0;
#include using namespace std; class baseA {
public:
int a;
virtual void setdata(); virtual void display();
};
class derivedB : baseA
{
public:
int b;
virtual void setdata(); virtual void display();
};
void baseA :: setdata()
{
a = 10;
}
void baseA :: display()
{
cout <><>
}
void derivedB :: setdata()
{
b = 20;
}
void derivedB :: display()
{
cout <><>
}
int main()
{
derivedB obj; obj.setdata(); obj.display(); return 0;
}
(c)
#include using namespace std; class baseA {
public:
int a;
virtual void setdata(); virtual void display();
};
class derivedB : public baseA
{
public:
int b;
void setdata(); void display();
};
void baseA :: setdata()
{
a = 10;
}
void baseA :: display()
{
cout <><>
}
void derivedB :: setdata()
{
b = 20;
}
void derivedB :: display()
{
cout <><>
}
int main()
{
}
(d)
baseA *ptr; derivedB obj; ptr = &obj;
ptr->setdata(); ptr->display(); return 0;
#include using namespace std; class baseA {
public:
int a;
void setdata(); void display();
};
class derivedB : public baseA
{
public:
int b;
void setdata(); void display();
};
void baseA :: setdata()
{
a = 10;
}
void baseA :: display()
{
cout <><>
}
void derivedB :: setdata()
{
b = 20;
}
void derivedB :: display()
{
cout <><>
}
int main()
{
}
(e)
baseA *ptr; derivedB obj; ptr = &obj;
ptr->setdata(); ptr->display(); return 0;
#include using namespace std; struct A {
void display()
{
cout <>
}
};
struct B : A
{
void display()
{
cout <>
}
};
struct C : B
{
void display()
{
cout <>
}
};
struct D : C
{
void display()
{
cout <>
}
};
int main()
{
A objA; B objB; C objC; D objD;
A *ptr[3]; ptr[0] = &objA; ptr[1] = &objB; ptr[2] = &objC; ptr[3] = &objD;
for (int i = 0; i <=>display();
}
(f)
}
return 0;
#include using namespace std; struct A {
virtual void display()
{
cout <>
}
};
struct B : A
{
virtual void display()
{
cout <>
}
};
struct C : B
{
virtual void display()
{
cout <>
}
};
struct D : C
{
virtual void display()
{
cout <>
}
};
int main()
{
A objA; B objB; C objC; D objD;
A *ptr[3]; ptr[0] = &objA; ptr[1] = &objB; ptr[2] = &objC; ptr[3] = &objD;
for (int i = 0; i <=>display();
}
return 0;
}