/* 3. Create a class called COMPLEX
that has two private data called real and imaginary.
Include member function input() to input
real & imaginary values, show() to display complex numbers.
Write a program to add and subtract two complex numbers.*/
#include <iostream>
using namespace std;
class complex // x+iy form
{float x; //real part
float y; //imaginary part
public:
void input (float real, float imag)
{x= real; y = imag;}
friend complex sum(complex, complex);
void subtract(complex, complex);
void show();
};
complex sum(complex c1, complex c2)
{complex c3; //objects c3 is created
c3.x = c1.x + c2.x;
c3.y = c1.y + c2.y;
return(c3); //returns object c3
}
void complex::subtract(complex c1, complex c2)
{x = c1.x – c2.x;
y = c1.y – c2.y;
}
void complex :: show()
{
cout << x << “+j”<< y << endl;
}
int main()
{
complex A,B,C,D;
A.input(3.1, 5.65);
B.input(2.75, 1.2);
C = sum(A, B);
D.subtract(A,B); //C = A + B
cout << “A = “; A.show();
cout << “B = “; B.show();
cout << “C = “; C.show();
cout << “D = “; D.show();
}
