Answer & Solution
Answer: Option D
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72. What is the order of Destructors call when the object of derived class B is declared, provided class B is derived from class A?
73. What will be the output of the following C++ code?
#include <iostream>
#include <string>
using namespace std;
class A
{
int a, b;
float d;
public:
void change(int i){
a = i;
}
void value_of_a(){
cout<<a;
}
};
class B: private A
{
};
int main(int argc, char const *argv[])
{
B b;
cout<<sizeof(B);
return 0;
}
#include <iostream>
#include <string>
using namespace std;
class A
{
int a, b;
float d;
public:
void change(int i){
a = i;
}
void value_of_a(){
cout<<a;
}
};
class B: private A
{
};
int main(int argc, char const *argv[])
{
B b;
cout<<sizeof(B);
return 0;
}74. What are the things are inherited from the base class?
75. What is the order of Constructors call when the object of derived class B is declared, provided class B is derived from class A?
76. What will be the output of the following C++ code?
#include <iostream>
using namespace std;
class polygon
{
protected:
int width, height;
public:
void set_values (int a, int b)
{
width = a; height = b;}
};
class output1
{
public:
void output (int i);
};
void output1::output (int i)
{
cout << i << endl;
}
class rectangle: public polygon, public output1
{
public:
int area ()
{
return (width * height);
}
};
class triangle: public polygon, public output1
{
public:
int area ()
{
return (width * height / 2);
}
};
int main ()
{
rectangle rect;
triangle trgl;
rect.set_values (4, 5);
trgl.set_values (4, 5);
rect.output (rect.area());
trgl.output (trgl.area());
return 0;
}
#include <iostream>
using namespace std;
class polygon
{
protected:
int width, height;
public:
void set_values (int a, int b)
{
width = a; height = b;}
};
class output1
{
public:
void output (int i);
};
void output1::output (int i)
{
cout << i << endl;
}
class rectangle: public polygon, public output1
{
public:
int area ()
{
return (width * height);
}
};
class triangle: public polygon, public output1
{
public:
int area ()
{
return (width * height / 2);
}
};
int main ()
{
rectangle rect;
triangle trgl;
rect.set_values (4, 5);
trgl.set_values (4, 5);
rect.output (rect.area());
trgl.output (trgl.area());
return 0;
}