(Duplicated) C++ Classes set/get from base and derived class [duplicate]

Question

I want to create a base class with two set, and derived class (inherit) with one set method. I want to combine them in a parameterized constructor.

#include <iostream>
#include <string.h>

using namespace std;

class Code
{
   protected:
      string letter;
      int number;
   public:
      string getletter();
      int getnumber();
      void setletter(string letter1);
      void setnumber(int number1);
};

void Code::setletter(string letter1)
{
   letter=letter1;
}

void Code::setnumber(int number1)
{
   number=number1;
}

string Code::getletter()
{
   return letter;
}

int Code::getnumber()
{
   return number;
}

class Course : public Code
{
   private:
      string name;
   public:
      Course(string name1, string letter1, int number1);
      string getname();
      void show();  
};

Course::Course (string name1, string letter1,int number1) :
      setletter(letter1), setnumber(number1)    //Parameterized Constructor
{
   name=name1;
   letter=letter1;
   number=number1;
}

string Course::getname()
{
   return name;
}

void show()
{
   Course com("Testing","TST",101);
   cout<<"Constructor >>>\n Course Name : "<< com.getname()<<"\n Course Code : "<< com.getletter() << com.getnumber()<<endl;
}

int main()
{
   show();
}

If it matters, I am using Microsoft's Visual C++.

Answer 1

You can call them inside your constructor

Course::Course (const string& name1, const string& letter1, const int number1) :
{
   name=name;
   setletter(letter1); // equivalent to letter=letter1 
   setnumber(number1);
}

You can add a constructor to your Code class

Code(const string& letter, const int number);

And call it like that in your Course constructor

Course::Course(const string& name1, const string& letter1, const int number1) 
: Code(letter1, number1), name(name1)
{

}

But I'm not sure of what your asking, if you can be a little more precise on what you want that could be great, thanks.

Answer 2

The : after the parameter list of a constructor is the 'member initializer list'.

Course::Course (string name1, string letter1,int number1)
: name(name1), letter(letter1), number(number1) {  }