BCA
Object Oriented Programming using C++ Practical
Madras University
Program 1
Write a class to represent a complex number which has member functions to do the
following
a. Set and show the value of the complex number
b. Add, subtract and multiply two complex numbers
c. Multiplying the complex number with a scalar value
SOURCE CODE:
#include<iostream.h>
#include<iomanip.h>
#include<conio.h>
class ComplexNumber {
private:
double real;
double imaginary;
public:
ComplexNumber() {
real = 0;
imaginary = 0;
}
void set_value(double realPart, double imaginaryPart) {
real = realPart;
imaginary = imaginaryPart;
}
void show_value() {
if(imaginary<0)
cout << real << " - " << -imaginary << "i" << endl;
else
cout << real << " + " << imaginary << "i" << endl;
}
void add(ComplexNumber c2) {
double r = real + c2.real;
double i = imaginary + c2.imaginary;
cout<<"Sum of two Complex numbers:"<<endl;
result(r, i);
}
void subtract(ComplexNumber c2) {
double r = real - c2.real;
double i = imaginary - c2.imaginary;
cout<<"Difference of two Complex numbers:"<<endl;
result(r, i);
}
void multiply(ComplexNumber c2) {
double r = real * c2.real - imaginary * c2.imaginary;
double i = real * c2.imaginary + imaginary * c2.real;
cout<<"Multiplication of two Complex numbers:"<<endl;
result(r, i);
}
void multiply_scalar(double scalar) {
double r = real * scalar;
double i = imaginary * scalar;
result(r, i);
}
void result(double real, double imaginary) {
if(imaginary<0)
cout << real << " - " << -imaginary << "i" << endl;
else
cout << real << " + " << imaginary << "i" << endl;
}
};
int main() {
ComplexNumber c1,c2;
double r1,r2,i1,i2,scalar;
clrscr();
cout<<"Enter the real and imaginary part of 1st complex number:";
cin>>r1;
cin>>i1;
cout<<"Enter the real and imaginary part of 2nd complex number:";
cin>>r2;
cin>>i2;
c1.set_value(r1,i1);
c2.set_value(r2,i2);
// Set and show value
cout<<"Complex Numbers:"<<endl;
c1.show_value();
c2.show_value();
// Add
c1.add(c2);
// Subtract
c1.subtract(c2);
// Multiply
c1.multiply(c2);
// Multiply with scalar
cout<<"Enter scalar value to multiply with complex numbers: "<<endl;
cin>>scalar;
c1.multiply_scalar(scalar);
c2.multiply_scalar(scalar);
getch();
return 0;
}
SAMPLE OUTPUT:
