// Program Name:   Template_9LbX1.exe
// Author:         Tyler Travis, Eruption Software
//                 www.travis-usa.com
// Date:           3/19/00


//This program creates a Student Class Array,
//inputs data, and displays the student's data.



#include<iostream.h>

template<class T>
class AllDataTypes
{
      private:
              T var1;
              T var2;
			  T var3;
      public:
	      AllDataTypes();//constructor to assign default values
          char get_data(T x);
          void calc_data(char o);
		  int letter_conv(char o);
	      void display_data(char o, char z);
 		  char exit();
};

void main()
{
	 AllDataTypes<int> instanceI;
     AllDataTypes<double> instanceD;
     AllDataTypes<char> instanceC;

	 int a = 1;
     double b = 2.0;
	 char answer = 'y', op = '+', c = 3, d = 4;

	 cout<<""<<endl;
	 cout<<" DPR226 Tutorial 9, Lesson B Exercise 1"<<endl;
	 cout<<" By Tyler Travis";
	 cout<<""<<endl;


	 do
	 {  cout<<endl;
        
        op = instanceI.get_data(a);
		instanceI.calc_data(op);
		instanceI.display_data(op, c);

        op = instanceD.get_data(b);
		instanceD.calc_data(op);
		instanceD.display_data(op, c);

        op = instanceC.get_data(c);
		instanceC.calc_data(op);
		instanceC.display_data(op, d);

        answer = instanceD.exit();
	 }
	 while(answer == 'y' || answer == 'Y');

}

template<class T>
AllDataTypes<T>::AllDataTypes()  // constructor
{
	AllDataTypes::var1 = 0;
    AllDataTypes::var2 = 0;
    AllDataTypes::var3 = 0;
}

template<class T>
char AllDataTypes<T>::get_data(T x)
{  char numType;
   char *ptrNum = &numType;
   char op = '+';

   if (x == 1)
	   ptrNum = "Integer";
   else
	   if (x == 2)
		   ptrNum = "Decimal";
   else
	   ptrNum = "Letter";

   cout<<" Type the first "<<ptrNum<<", then press <Enter>:  ";
    cin>>AllDataTypes::var1;
   cout<<" Type an Operator (+, -, *, /), then press <Enter>:  ";
    cin>>op;
   cout<<" Type the second "<<ptrNum<<", then press <Enter>:  ";
    cin>>AllDataTypes::var2;

   return op;
}

template<class T>
void AllDataTypes<T>::calc_data(char o)
{     
	switch (o)
	{
	   case '+':
           	var3 = var1 + var2;
		   break;
	   case '-':
           	var3 = var1 - var2;
		   break;
	   case '*':
           	var3 = var1 * var2;
		   break;
	   case '/':
           	var3 = var1 / var2;
		   break;
	}
}

template<class T>
void AllDataTypes<T>::display_data(char o, char z)
{   double conv = 0.0, cv1 = 0.0, cv2 = 0.0;
    cv1 = var1;
	cv2 = var2;

	cout<<" "<<var1<<" "<<o<<" "<<var2<<" = "<<var3<<endl;
	if (z == 4)
	{ conv = letter_conv(o);
	  cout<<" "<<var1<<" (ascii "<<cv1<<") "<<o<<" "<<var2<<" (ascii "<<cv2<<") = "<<conv<<" numerically."<<endl;
	}
	cout<<endl;
}

template<class T>
int AllDataTypes<T>::letter_conv(char o)
{   double conv1 = 0.0, conv2 = 0.0, conv3 = 0.0;
      conv1 = var1;
	  conv2 = var2;
	    switch (o)
		{
	     case '+':
           	conv3 = conv1 + conv2;
		   break;
	     case '-':
           	conv3 = conv1 - conv2;
		   break;
	     case '*':
           	conv3 = conv1 * conv2;
		   break;
	     case '/':
           	conv3 = conv1 / conv2;
		   break;
	}
	return conv3;
}

template<class T>
char AllDataTypes<T>::exit()
{
    char ans;
    cout<<""<<endl;
    cout<<" Again? (y/n): ";
     cin>>ans;
     cin.get();

    return(ans);
}