Aim: To implement a program to add two complex numbers using constructors.

Code:                      

class complex

{

            int real;

            int img;

            public:

            complex(int r=0, int i=0);

            complex(complex c1, complex c2);

            void display();

};

complex :: complex(int r,int i)

{

            real=r;

            img=i;

}

complex :: complex(complex c1,complex c2)

{

            real=c1.real+c2.real;

            img=c1.img+c2.img;

}

void complex :: display()

{

            cout<

}

void main()

{

            int r1,r2,i1,i2;

            clrscr();

            cout<<"\nEnter first complex no:\nReal:";

            cin>>r1;

            cout<<"Imaginary:";

            cin>>i1;

            cout<<"\nEnter second complex no:\nReal:";

            cin>>r2;

            cout<<"Imaginary:";

            cin>>i2;

            complex c1(r1,i1);

            cout<<"\nFirst:\t\t";

            c1.display();

            cout<<"\nSecond:\t\t";

            complex c2(r2,i2);

            c2.display();

            complex c3(c1,c2);

            cout<<"\n----------------------\nAddition:\t";

            c3.display();

            getch();

}

Output:

Enter first complex no:

Real:25

Imaginary:3

Enter second complex no:

Real:12

Imaginary:71

First:          25+3i

Second:         12+71i

----------------------

Addition:       37+74i