Which class is used to design the base class?

1.	Which class is used to design the base class?
A.	base class
B.	derived class
C.	abstract class
D.	All of above
E.	None of these
Answer» D. All of above

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What is the output of this program? <pre class="prettyprint lang-c">#include <iostream> using namespace std; class InterfaceClass { public: virtual void Display() = 0; }; class ClassA : public InterfaceClass { public: void Display() { int num = 10; cout << num; } }; class ClassB : public InterfaceClass { public: void Display() { cout < } }; int main() { ClassA object1; object1.Display(); ClassB object2; object2.Display(); return 0; } </pre>
What is the output of this program? <pre class="prettyprint lang-c">#include <iostream> using namespace std; class FirstClass { protected: int width, height; public: void set_values (int x, int y) { width = x; height = y; } virtual int area (void) = 0; }; class SecondClass: public FirstClass { public: int area (void) { return (width * height); } }; class ThirdClass: public FirstClass { public: int area (void) { return (width * height / 2); } }; int main () { SecondClass Rectangle; ThirdClass trgl; FirstClass * ppoly1 = &Rectangle; FirstClass * ppoly2 = &trgl; ppoly1->set_values (3, 6); ppoly2->set_values (3, 6); cout << ppoly1 -> area() < cout << ppoly2 -> area(); return 0; } </pre>
What is the output of this program? <pre class="prettyprint lang-c">#include <iostream> using namespace std; class Base { int K; public: void setInt(int num); int getInt(); }; class Derived : public Base { int L; public: void setL(int num); int multiply(); }; void Base::setInt(int num) { K = num; } int Base::getInt() { return K; } void Derived::setL(int num) { L = num; } int Derived::multiply() { return L * getInt(); } int main() { Derived object; object.setInt(12); object.setL(3); cout << object.multiply(); return 0; } </pre>
What is the output of this program? <pre class="prettyprint lang-c">#include <iostream> using namespace std; class BaseClass { public: virtual void Function() { cout << "4"; } }; class DerivedClassA : public BaseClass { public: void Function() { cout << " 5"; } }; class DerivedClassB : public DerivedClassA { public: void Function() { cout << " 6"; } }; int main() { BaseClass *ptr; BaseClass BaseObject; DerivedClassA derivedObjectA; DerivedClassB derivedObjectB; ptr = &BaseObject; ptr -> Function(); ptr = &derivedObjectA; ptr -> Function(); ptr = &derivedObjectB; ptr -> Function(); return 0; } </pre>
What is the output of this program? <pre class="prettyprint lang-c">#include <iostream> using namespace std; class BaseClass { int A; public: void setA(int num1) { A = num1; } void showA() { cout << A < } }; class DerivedClass : private BaseClass { int B; public: void setAB(int num1, int num2) { setA(num1); B = num2; } void showAB() { showA(); cout < } }; int main() { DerivedClass object; object.setAB(15, 25); object.showAB(); return 0; } </pre>
What is the output of this program? <pre class="prettyprint lang-c">#include <iostream> using namespace std; class BaseClass { public: BaseClass(){} ~BaseClass(){} protected: private: }; class DerivedClass:public BaseClass { public: DerivedClass(){} DerivedClass(){} private: protected: }; int main() { cout << "The program exceuted" << endl; } </pre>
What is the output of this program? <pre class="prettyprint lang-c">#include <iostream> #include <sstream> using namespace std; int main() { stringstream strstream(ios :: in | ios :: out); std :: string data("The double value is : 12.25 ."); strstream.str(data); strstream.seekg(-5, ios :: end); double value; strstream >> value; value = value*value; strstream.seekp(-5,ios::end); strstream << value; std :: string new_value = strstream.str(); cout << new_value; return 0; } </pre>
What is the output of this program? <pre class="prettyprint lang-c">#include <iostream> using namespace std; class Polygon { protected: int W, H; public: void set_values(int width, int height) { W = width; H = height; } }; class Coutput { public: void output(int i); }; void Coutput::output(int i) { cout < class Rectangle:public Polygon, public Coutput { public: int area() { return(W * H); } }; class Triangle:public Polygon, public Coutput { public: int area() { return(W * H / 2); } }; int main() { Rectangle Rect; Triangle trgl; Rect.set_values(5, 2); trgl.set_values(5, 2); Rect.output(Rect.area()); trgl.output(trgl.area()); return 0; } </pre>
What is the output of this program? <pre class="prettyprint lang-c">#include <iostream> using namespace std; class student { protected: int Rollno; public: void get_Rollno(int num) { Rollno = num; } void put_Rollno(void) { } }; class test:public student { protected: float Subject1,Subject2; public: void get_mark(float num1, float num2) { Subject1 = num1; Subject2 = num2; } void put_marks() { } }; class sports { protected: float score; public: void getscore(float s) { score = s; } void putscore(void) { } }; class result: public test, public sports { float total; public: void display(void); }; void result::display(void) { total = Subject1 + Subject2 + score; put_Rollno(); put_marks(); putscore(); cout << "Total Score = " << total << " n"; } int main() { result student; student.get_Rollno(101); student.get_mark(50.25, 42.52); student.getscore(7.0); student.display(); return 0; } </pre>
What is the output of this program? <pre class="prettyprint lang-c">#include <iostream> using namespace std; class BaseClass { public: virtual void print() const = 0; }; class DerivedClassA : virtual public BaseClass { public: void print() const { cout << " 5 "; } }; class DerivedClassB : virtual public BaseClass { public: void print() const { cout << "3"; } }; class Multiple : public DerivedClassA, DerivedClassB { public: void print() const { DerivedClassB::print(); } }; int main() { Multiple both; DerivedClassA objectA; DerivedClassB objectB; BaseClass *array[ 3 ]; array[ 0 ] = &both; array[ 1 ] = &objectA; array[ 2 ] = &objectB; for ( int K = 0; K < 3; K++ ) array[ K ] -> print(); return 0; } </pre>

Which class is used to design the base class?

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