Consider a class named Calculator that contains

· Two data members i.e. num1 and num2

• A parameterized constructor to assign values to both data members
• · Four functions i.e. addition(), subtraction(), multiplication(), and division() to perform their respective functions on data members and return result in double
•  

Make the class Calculator into a template and in this way, a user would be able to instantiate it using different data types for the data members. In the main function, instantiate two objects of Calculator class with data members of type integer and float, respectively and invoke all functions of class Calculator.

Please create program in c++. and kindly add comments in program so i can understand it

 

Answer:
#include<iostream>
using namespace std;

//Generic Class
template<typename T>
class Calculator
{
	private:
		T num1; //data member 1
		T num2; //data member 2
	public:
		Calculator(T n1,T n2) //parameterized constructor
		{
			//initialization of private data members
			num1=n1;
			num2=n2;
		}
		
		//Addition method
		double addition()
		{
			cout<<"Addition : ";
			return ((double)num1+num2); //typecasting into double
		}
		
		//subtraction method
		double subtraction()
                {
			cout<<"Subtraction : ";
                        return ((double)num1-num2); //typecasting into double
                }
		
		//multiplication method
		double multiplication()
                {
			cout<<"Multiplication : ";
                        return ((double)num1*num2); //typecasting into double
                }
		
		//division method
		double division()
                {
                        cout<<"Division : ";
			return ((double)num1/num2); //typecasting into double
                }

};

//Main function
int main()
{
	//Initialization of object int type
	Calculator<int> c(100,5);
	
	//calling different methods by using int type object
	cout<<c.addition()<<endl;
	cout<<c.subtraction()<<endl;
	cout<<c.multiplication()<<endl;
	cout<<c.division()<<endl;

	//Initialization of object float type
	Calculator<float> c1(5.0,2.5);

	//calling different methods by using int type object
        cout<<c1.addition()<<endl;
        cout<<c1.subtraction()<<endl;
        cout<<c1.multiplication()<<endl;
        cout<<c1.division()<<endl;

}