Please follow all instructions on the picture. Thank you in advance. Given the f

Question

Please follow all instructions on the picture. Thank you in advance.

Given the following segments of code, add constructor in the derived class B and the base class A, and test it using a main routine. Class A {int valuea: public: int getvaluea () const {return valuea;) void setvaluea (int x) {value = x;)//copy constructor}; class B: public A {int valueb public: int getvalueb () const return value;) void setvalueb (int x) {valueb = x;}//copy constructor}; Modify the definitions of the above two classes to template classes, i.e int value a; and "int valueb should be changed to a generic data type. After the modification, you need to test these two template classes with the following test cases: Create an instance of class B with float data type (valuea = 1.34 and valueb = 3.14) Create an instance of class B with integer data type (valuea = 1 and valueb = 3) Create an instance of class B with char data type (valuea = 'a' and valueb = c') Create an instance of class B with string data type (valuea = "good" and valueb = "morning

Explanation / Answer

#include <iostream>
using namespace std;

struct Date //definition of structure
{
    int day;
    int month;
    int year;
  
};

//template base and derived classes
template <class type> class A
{
    private:
    type valuea;
  
public:
A(){}
    type getValuea()const {return valuea; }
    void setValuea(type x) {valuea = x;}
  
    A(type obj)
    {
        valuea = obj.valuea;
    }
  
};

template <class type> class B:public A<type>
{
    private:
    type valueb;
public:
    type getValueb()const {return valueb; }
    void setValueb(type x) {valueb = x;}
  
    B(){}
    B(type obj)
    {
        valueb = obj.valueb;
    }
};

int main()
{
   //objects of different types
   B<float> obj1;
   obj1.setValuea(1.34);
   obj1.setValueb(3.14);
  
   cout<<" obj1 : valuea = "<<obj1.getValuea()<<"   valueb : "<<obj1.getValueb();
  
   B<int> obj2;
   obj2.setValuea(1);
   obj2.setValueb(3);
  
   cout<<" obj2 : valuea = "<<obj2.getValuea()<<"   valueb : "<<obj2.getValueb();
  
   B<char> obj3;
   obj3.setValuea('a');
   obj3.setValueb('c');
  
   cout<<" obj3 : valuea = "<<obj3.getValuea()<<"   valueb : "<<obj3.getValueb();
  
   B<string> obj4;
   obj4.setValuea("good");
   obj4.setValueb("morning");
  
   cout<<" obj4 : valuea = "<<obj4.getValuea()<<"   valueb : "<<obj4.getValueb();
  
   struct Date d1 = {27,10,2015};
   struct Date d2 = {2,11,2015};
   struct Date d3,d4;
  
   B<struct Date> obj5;
   obj5.setValuea(d1);
   obj5.setValueb(d2);
  
   d3 = obj5.getValuea();
   d4 = obj5.getValueb();
  
   cout<<" obj5 : valuea = "<<d3.day<<" "<<d3.month<<" "<<d3.year<<"   valueb : "<<d4.day<<" "<<d4.month<<" "<<d4.year;
  
   return 0;
}

Output:

obj1 : valuea = 1.34 valueb : 3.14

obj2 : valuea = 1 valueb : 3

obj3 : valuea = a valueb : c

obj1 : valuea = good valueb : morning

obj1 : valuea = 27 10 2015 valueb : 2 11 2015

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