Question

c++
using class...
define operator overloading and give simple example how we can use operator overloading by writing simple program in which different operators are used to add, subtract, multiply and division.

Answer 1

C++ allow to specify more than one definition for an operator in the same scope, which is called operator overloading.

Example C++ Program

#include<iostream>
using namespace std;

class Fraction{
   private:
       int num;
       int deno;
      
   public:
       Fraction(int n=0 , int d=1){
           num = n;
           deno = d;
       }
      
       Fraction operator+ (const Fraction& frac) {
            Fraction ob;
            ob.num = num*frac.deno + deno*frac.num;
            ob.deno = deno*frac.deno;
            return ob;
        }
      
        Fraction operator- (const Fraction& frac) {
            Fraction ob;
            ob.num = num*frac.deno - deno*frac.num;
            ob.deno = deno*frac.deno;
            return ob;
        }
      
        Fraction operator* (const Fraction& frac) {
            Fraction ob;
            ob.num = num*frac.num;
            ob.deno = deno*frac.deno;
            return ob;
        }
      
        Fraction operator/ (const Fraction& frac) {
            Fraction ob;
            ob.num = num*frac.deno;
            ob.deno = deno*frac.num;
            return ob;
        }
      
        friend ostream& operator << (ostream& out , const Fraction& Frac){
           out<<Frac.num<<"/"<<Frac.deno<<endl;
           return out;
       }
};

int main(){
   Fraction F1(2,3);
   Fraction F2(1,2);
  
   cout<<"F1 + F2 = "<< F1 + F2<<endl;
   cout<<"F1 - F2 = "<<F1 - F2<<endl;
   cout<<"F1 * F2 = "<<F1 * F2<<endl;
   cout<<"F1 / F2 = "<<F1 / F2<<endl;
  
   return 0;
}

sample output