## C++ Algorithms Code Examples:- Complex nos

C++ Algorithms Code Examples:- Complex nos

```#include<iostream.h>
#include<conio.h>
class complex
{
private:
float real,img;
public:
void assign(float x,float y)
{
real=x;
img=y;
}
void print()
{  if(img>=0)
cout<<real<<"+"<<img<<"i";
else
cout<<real<<img<<"i";
getch();
}
};
void add( float a,float b,float c, float d)
{

float e,f;complex g;
e=a+c;
f=b+d;
g.assign(e,f);
g.print();
}
void sub( float a,float b,float c, float d)
{

float e,f;complex g;
e=a-c;
f=b-d;
g.assign(e,f);
g.print();
}
void mul( float a,float b,float c, float d)
{

float e,f; complex g;
e=a*c-b*d;
f=b*c+a*d;
g.assign(e,f);
g.print();
}
void main()
{
float a,b,c,d;
complex x,y,z;
clrscr();
cout<<" for complex 1:";
cout<<"real part:";
cin>>a;
cout<<"imaginary part:";
cin>>b;
cout<<" for complex 2:";
cout<<"real part:";
cin>>c;
cout<<"imaginary part:";
cin>>d;
x.assign(a,b);
y.assign(c,d);
cout<<"**************original data:************\n";
cout<<"Complex 1:\n";x.print();
cout<<"\n Complex 2:\n";y.print();
cout<<"\n************=================**********\n";
cout<<"\n Subtraction:\n";sub(a,b,c,d);
cout<<"\n Multipication:\n";mul(a,b,c,d);
}
```