C++ class program to perform rational number arithmetic Operations using Operator Overloading

#include<stdio.h>          

 #include<iostream.h>

 #include<conio.h>

 class rational

 {

                 int numer;

                 int denom;

                 public:

                 void getdata()

                 {

                                 cout<<"\n enter the numerator part of the rational no.";

                                 cin>>numer;

                                 cout<<"\n enter the denominator part of the rational no.";

                                 cin>>denom;

                 }

                 void operator+(rational);

                 void operator-(rational);

                 void operator *(rational);

                 void operator /(rational);

 };

 void rational ::operator+(rational c1)

 {

                 rational temp;

                 temp.numer=(numer*c1.denom)+(c1.numer*denom);

                 temp.denom=denom*c1.denom;

                 cout<<"\nrational no. after addition";

                 cout<<"\n numerator="<<temp.numer<<"\n denominator ="<<temp.denom;

 }

 void raional ::operator -(rational c1)

 {

                 rational temp;

                 temp.numer=(numer*c1.denom)-(c1.numer*denom);

                 temp.denom=denom*c1.denom;

                 cout<<"\n rational no. after subtraction";

                 cout<<"\n numerator="<<temp.numer<,"\n denominator ="<<temp.denom;

 }

 void rational ::operator (rational c1)

 {

                 rational temp;

                 temp.numer=numer*c1.numer;

                 temp.denom=denom*c1.denom;

                 cout<<"\n rational no. after multiplication";

                 cout <<"\n numerator="<temp.numer<<"\n denominator ="<< temp.denom;

 }

 void rational :: operator /(rational c1)

 {

                 rational temp;

                 temp.numer= numer*c1.denom;

                 temp.denom=c1.numer*denom;

                 cout<<"\n rational no. after division";

                 cout <<"\n numerator="<<temp.numer<<"\n denominator ="<<temp.denom;

 }

 void main()

 {

                 clrscr();

                 rational c1, c2;

                 int n;

                 do

                 {

                                 cout<<"\n 1.Input data for rational no. ";

                                 cout<<"\n 2. Addition of rational no. ";

                                 cout<<"\n 3. Subtraction of rational no. ";

                                 cout<<"\n 4. Multiplication of rational no.";

                                 cout<<\n  5. Division of rational no. ";

                                 cout<<"\n 6. Quit";

                                 cout<<"\n Enter your choice";

                                 cin>>n;

                                 switch(n)

                                 {

                                                 case 1:

                                                 cout<<endl<<"\n enter the data for first rational no.";

                                                 c1.getdata();

                                                 cout<<endl<<"\n enter the data for second rational no. ";

                                                 c2.getdata ();

                                                 clrscr();

                                                 break;

                                                 case 2;

                                                 c1+c2;

                                                 getch();

                                                 clrscr();

                                                 break;

                                                 case 3;

                                                 c1-c2;

                                                 getch();

                                                 clrscr();

                                                 case 4:

                                                 c1*c2;

                                                 getch();

                                                 clrscr();

                                                 break;

                                                 case 5:

                                                 c1/c2;

                                                 getch();

                                                 clrscr();

                                                 break;

                                                 case 6:

                                                 exit(1);

                                                 break;

                                 }

                 } while (n!=6);

                 getch();

 }