a) float Addfraction (float,float)
B) float Subtractfraction (float,float)
c) float Multiplyfraction (float,float)

#include<iostream.h>
#include<stdlib.h>
#include<conio.h>

class Fraction {

private:

    int num;

    int den;


public:

   Fraction();

   void menu();

   void add();

   void subtract();

   void multiply();

   float addfraction(float,float);

   float subtractfraction(float,float);

   float multiplyfraction(float,float);

   float num1,num2,num3;

   void main ()
  
   while(choice != -1)

   switch (choice)

   {

   menu();
  
   }

   void menu()
  
   {

    float choice;
    cout<<"1.add";cout<<endl;
    cout<<"2.subtract";cout<<endl;
    cout<<"3.multiply";cout<<endl;
    cout<<"4.exit";cout<<endl;
    cout<<"ENTER A CHOICE";
    cin>>choice;
    }

    {    

    case 1:
    add();
    break;

    case 2:
       subtract();
    break;

      case 3:
       multiply();
       break;

       case 4:
       exit();
       break;

  };

Fraction::Fraction(){

num=0;

den=1;

}

void Fraction::addfraction(){

float num1;

cout<<"Enter the first number";

cin>>num1;

addfraction=fraction+num1;

cout<<"Result after addfraction"<<addfraction;

cout<<endl;

}

void Fraction::subtractfraction(){

float num2;

cout<<"Enter a second number";

cin>>num2;

subtractfraction=num1-num2;

cout<<"Result after subtractfraction"<<subtractfraction;

cout<<endl;

}

void Fraction::multiplyfraction(){

float num3;

cout<<"Enter a third number";

cin>>num3;

multiplyfraction=num2*num3;

cout<<"Result after multiplyfraction"<<multiplyfraction;

cout<<endl;

}

void exit(){
}

void main(){

Fraction F;

F.addfraction();

F.subtractfraction();

F.multiplyfraction();

getch();}

class {
....
........
};

int main()
{
....
}

#include <iostream.h>
#include <stdlib.h>
#include <conio.h>

class Fraction {

private:

float x;
float y;

public:
Fraction ();
Fraction (float, float);
float addFraction();
float subFraction();
float mulFraction();
void setValues(float, float);

};

//constructor
Fraction::Fraction () {
x = 0;
y = 0;
}
//constructor
Fraction::Fraction (float a, float B) {
x = a;
y = b;
}
//add fraction
float Fraction::addFraction(){
return x+y;
}
//subtract fraction
float Fraction::subFraction(){
return x-y;
}
//multiply fraction
float Fraction::mulFraction(){
return x*y;
}
//changes the variables in the function
void Fraction::setValues(float var1, float var2){
x = var1;
y = var2;
}




//function to get the menu choice;
int menu (){
int choice;
cout << "1.add";cout<<endl;
cout << "2.subtract";cout<<endl;
cout << "3.multiply";cout<<endl;
cout<< "4.exit";cout<<endl;
cout<< "enter a choice";
cin>>choice;
return choice;

}

void main(){
//create fraction object
Fraction frac;
int selection;
float first, second;
float answer;
//call menu function and store result in selection
selection = menu();
switch(selection) {
case 1:
   cout<<"enter the first value" << endl;
   cin >> first;
   cout<<"enter the second value"<<endl;
   cin>>second;
   frac.setValues(first,second);
   answer = frac.addFraction();
    break;
case 2:
cout<<"enter the first value" << endl;
   cin >> first;
   cout<<"enter the second value"<<endl;
   cin>>second;
   frac.setValues(first,second);
   answer = frac.subFraction();
    break;
case 3:
cout<<"enter the first value" << endl;
   cin >> first;
   cout<<"enter the second value"<<endl;
   cin>>second;
   frac.setValues(first,second);
   answer = frac.mulFraction();
    break;
case 4:
   return;

}

cout << "the answer is" << answer<<endl;


}