Operator Overloading – [Simplification] C++

Use of Operator Overloading for simplification.

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Example :

 #include<iostream.h>

   //  a/b+c/d using operater overloading

  class OppOvl

      {

           private:

              float num,deno;

           public:

              OppOvl()

                   {

                        num=0;

                        deno=1;

                   }

           void input()

              {

                   cout<<"\t\nEnter Numerator : ";

                   cin>>num;

                   cout<<"\t\nEnter Denominator : ";

                   cin>>deno;

              }

           void display()

              {

                   cout<<"\t "<<num<<" / "<<deno;

              }

           int GCD(int a,int b)

              {

                   int c;

                   while(b>0)

                        {

                            c=a%b;

                            a=b;

                            b=c;

                        }

                   return a;

              }

           OppOvl operator +(OppOvl);

      };

  OppOvl OppOvl::operator + (OppOvl m)

      {

           int g;

           OppOvl m1;

           m1.num=num*m.deno+deno*m.num;

           m1.deno=deno*m.deno;

           if(m1.num>m1.deno)

              {

                   g=GCD(m1.num,m1.deno);

              }

           else

              {

                   g=GCD(m1.deno,m1.num);

              }

           m1.num=m1.num/g;

           m1.deno=m1.deno/g;

           return m1;

      }

  int main()

      {

          OppOvl a,b,c;

           cout<<"\t\nEnter First Exp. ";

           a.input();

           cout<<"\t\nEnter Second Exp. ";

           b.input();

           cout<<"\t\nAfter a + b\n";

           a.display();

           cout<<" + ";

           b.display();

           cout<<" = ";

           c=a+b;

           c.display();

           return 0;

      }