OPERATIONS ON COMPLEX NUMBERS USING FILES AS STORAGE

OPERATIONS ON COMPLEX NUMBERS USING FILES AS STORAGE

AIM:

To write a C++ program to perform addition of complex numbers using files.

ALGORITHM:

Step 1: Start the program.

Step 2: Create a class called COMPLEX and create its members: real and imaginary.

Step 3: Generate the random numbers by using rand() function.

Step 4: Write the randomly generated numbers in a file called “complex1.txt”.

Step 5: Add the two complex numbers.

Step 6: Store the Resultant complex number in another file called “result.txt”

Step 7: Display the resultant value.

Step 8: Stop the program.

PROGRAM:

#include<iostream.h>

#include<conio.h>

#include<fstream.h>

#include<stdlib.h>

#include<time.h>

class complex

{

public:

int real;

int imag;

complex(int r, int i)

{

real = r;

imag = i;

}

complex()

{

real = imag = 0;

}

void display(void);

};

void complex::display(void)

{

cout<<real<<((imag<0)?"-i":"+i")<<imag<<"\n";

}

void main()

{

clrscr();

ofstream ocom("complex1.txt");

float real,imag;

time_t ti;

srand((unsigned) time(&ti));

real = rand()%100;

imag = rand()%100;

ocom<<"("<<real<<((imag<0)?"-i":"+i")<<imag<<")"<<"+";

real = rand()%100;

imag = rand()%100;

ocom<<"("<<real<<((imag<0)?"-i":"+i")<<imag<<")"<<"\n";

ocom.close();

ifstream icom("complex1.txt");

char no,t,ch,op;

icom>>no;

icom>>real;

icom>>ch;

icom>>no;

icom>>imag;

imag=(ch=='+')?imag:-imag;

icom>>no;

icom>>op;

complex a(real,imag);

icom>>no;

icom>>real;

icom>>ch;

icom>>no;

icom>>imag;

imag=(ch=='+')?imag:-imag;

icom>>no;

icom>>op;

complex b(real,imag);

complex c;

switch(op)

{

case '+':

c.real = a.real+b.real;

c.imag = a.imag+b.imag;

break;

case '-':

c.real = a.real-b.real;

c.imag = a.imag-b.imag;

break;

case '*':

c.real = (a.real*b.real)-(a.imag*b.imag);

c.imag = (a.real*b.imag)+(a.imag*b.real);

break;

case '/':

float qt;

qt = b.real*b.real+b.imag*b.imag;

c.real = (a.real*b.real+a.imag*b.imag)/qt;

c.imag = (a.imag*b.real-a.real*b.imag)/qt;

break;

default:

cout<<"\n Invalid";

}

cout<<"\n complex 1:";

a.display();

cout<<"\n complex 2:";

b.display();

cout<<"\n Resultant complex:";

c.display();

ofstream out("result.txt");

out<<"("<<c.real<<((c.imag<0)?"-i":"+i")<<c.imag<<")";

out.close();

}

OUTPUT:

complex1.txt:

(0+i72)+(39+i71)

result.txt

(39+i143)

RESULT:

Thus the program for addition of complex numbers using files was executed.