Program : 15

PROGRAM - 15

Write a program that uses the functions to perform the following:

a)  Reading a complex number.

b)  Writing a Complex number.

c)  Addition of two complex numbers.

d)  Multiplication of two Complex numbers.

Program:

#include<stdio.h>

#include<conio.h>

#include<math.h>

#include<stdlib.h>

void arth(int);

struct comp

{

     double rp;

     double ip;

};

void main()

{

     int op;

     clrscr();

     printf("\nMAIN MENU");

     printf("select \n 1. ADDTION\n 2. MULTIPLICATION\n

                                        0. EXIT\n");

     scanf("%d",&op);

     switch(op)

     {

          case 0:exit(0);

          case 1:

          case 2:

          arth(op);

          break;

          default:

          printf("\n invalid statement");

          exit(0);

     }

}

void arth(int op)

{

     struct comp w1,w2,w;

     printf("enter the first complex number:");

     scanf("%lf",&w1.rp);

     scanf("%lf",&w1.ip);

     printf("enter the second complex number:");

     scanf("%lf",&w2.rp);

     scanf("%lf",&w2.ip);

     switch(op)

     {

        case 1:

        w.rp=w1.rp+w2.rp;

        w.ip=w1.ip+w2.ip;

        break;

        case 2:

        w.rp=(w1.rp*w2.rp)-(w1.ip*w2.ip);

        w.ip=(w1.rp*w2.ip)+(w1.ip*w2.rp);

        break;

     }

     if(w.ip>0)

     printf("answer=%lf+i%lf",w.rp,w.ip);

     else

     printf("answer=%lf-i%lf",w.rp,w.ip);

     getch();

}

/*

IPNPUT:MAIN MENUSELECT

 1. ADDTION

 2. MULTIPLICATION

 0. EXIT

your option is:2

enter the first complex number:2     3

enter the second complex number:4    5

answer=-7.000000+i22.000000

MAIN MENUselect

 1. ADDTION

 2. MULTIPLICATION

 0. EXIT

 1

enter the first complex number:3     4

enter the second complex number:5    6

answer=8.000000+i10.000000

*/