Complex Numbers

[ThatBitchYeah]

I have an assignment in which i have to add, subtract, multiply and divide two complex numbers and i am very confused as to how to create the program.
This is what i have got so far..

#include <stdio.h>
#include <complex.h>

int main (void)

int real, imag;

{
    complex a, b, c, d;

    printf("Please enter the two real and imaginary complex numbers (a+jb) :\n")
    printf("a = \n");
    scanf("%d", &a.real);
    printf("b = \n");
    scanf("%d", &b.imag);

    printf("Please enter the next two real and imaginary complex numbers (c+jd) :\n")
    printf("c = \n");
    scanf("%d", &c.real);
    printf("d = \\n");
    scanf("%d", &d.imag);

}

obviously i don't know if this is right but i am hoping so, now i don't know how to write the expression for adding the two complex numbers or outputting the end value.

[ahmedhamdy]

you can make struct called complex
used to represent complex number

#include<stdio.h> 
#include<stdlib.h>

struct complex
{
  int real,imag;

};

int main()
{
     struct complex x,y;

    printf("Please enter the two real and imaginary complex numbers (a+jb) :\n");
    printf("real number:");
    scanf("%d",&x.real);
    printf("\nImaginary number:");
    scanf("%d", &x.imag);
    printf("Please enter the next two real and imaginary complex numbers (c+jd) :\n");
    printf("\nreal number:");
    scanf("%d",&y.real);
    printf("\nImaginary number:");
    scanf("%d",&y.imag);

      printf("\nFrist Complex Number:%d+i%d",x.real,x.imag);
      printf("\nSecond Complex Number:%d+i%d",y.real,y.imag);


    return 0;
} 

[ahmedhamdy]

#include<stdio.h> 
#include<stdlib.h>
#include<conio.h>
#include<math.h>

struct Complex
{
  int real,imag;

};

struct Complex Add_Comp(struct Complex e1,struct Complex e2); // add two complex number
struct Complex Mul_Comp(struct Complex e1,struct Complex e2); // multiply two complex number
struct Complex Sub_Comp(struct Complex e1,struct Complex e2); // subtract two complex number


int main()
{
     struct Complex x,y,z;
     clrscr();

    printf("Please enter the two real and imaginary complex numbers (a+jb) :\n");
    printf("real number:");
    scanf("%d",&x.real);
    printf("\nImaginary number:");
    scanf("%d", &x.imag);
    printf("Please enter the next two real and imaginary complex numbers (c+jd) :\n");
    printf("\nreal number:");
    scanf("%d",&y.real);
    printf("\nImaginary number:");
    scanf("%d",&y.imag);



     printf("\nFrist Complex Number:%d+i%d",x.real,x.imag);
     printf("\nSecond Complex Number:%d+i%d",y.real,y.imag);

      z=Add_Comp(x,y);
      printf("\nResult of Add two Complex Number:%d+i%d",z.real,z.imag);
      z=Mul_Comp(x,y);
      printf("\nResult of Multiply two Complex Number:%d+i%d",z.real,z.imag);
      z=Sub_Comp(x,y);
       if(z.real==0)
       {
          printf("\nResult of Subtract two Complex Number:i%d",z.imag);
       }
       else if(z.imag==0)
       {
          printf("\nResult of Subtract two Complex Number:%d",z.real);
       }
       else
       {
          printf("\nResult of Subtract two Complex Number:%d+i%d",z.real,z.imag);
       }


    getch();
    return 0;
}

struct Complex Add_Comp(struct Complex e1,struct Complex e2)
{

  struct Complex e3;

  e3.real=e1.real+e2.real;
  e3.imag=e1.imag+e2.imag;

   return e3;
}

struct Complex Mul_Comp(struct Complex e1,struct Complex e2)
{

    struct Complex e3;

  e3.real=e1.real*e2.real;
  e3.imag=e1.imag*e2.imag;

   return e3;

}

struct Complex Sub_Comp(struct Complex e1,struct Complex e2)
{
     struct Complex e3;

  e3.real=abs(e1.real-e2.real);
  e3.imag=abs(e1.imag-e2.imag);

   return e3;

}

this code add and multiply and subtract two complex number

[ThatBitchYeah]

i'm wanting to do separate programs for each (aka one program for adding one for subtracting) is this possible?

[ahmedhamdy]

yes you just take only function which make add two complex number in one program

this program will be for adding

like that::

#include<stdio.h> 
#include<stdlib.h>

struct Complex
{
  int real,imag;
};

struct Complex Add_Comp(struct Complex e1,struct Complex e2); // add two complex number

int main()
{
     struct Complex x,y,z;

    printf("Please enter the two real and imaginary complex numbers (a+jb) :\n");
    printf("real number:");
    scanf("%d",&x.real);
    printf("\nImaginary number:");
    scanf("%d", &x.imag);
    printf("Please enter the next two real and imaginary complex numbers (c+jd) :\n");
    printf("\nreal number:");
    scanf("%d",&y.real);
    printf("\nImaginary number:");
    scanf("%d",&y.imag);
     printf("\nFrist Complex Number:%d+i%d",x.real,x.imag);
     printf("\nSecond Complex Number:%d+i%d",y.real,y.imag);
      z=Add_Comp(x,y);
      printf("\nResult of Add two Complex Number:%d+i%d",z.real,z.imag);

    return 0;
}
struct Complex Add_Comp(struct Complex e1,struct Complex e2)
{
  struct Complex e3;
  e3.real=e1.real+e2.real;
  e3.imag=e1.imag+e2.imag;
   return e3;
}

[tux4life]

i'm wanting to do separate programs for each (aka one program for adding one for subtracting) is this possible?

Yes.

[ThatBitchYeah]

OMFG!!!!! thank you SO much...i am actually going to cry i've been trying to do this the past 3 days haaaa!! :)

[ThatBitchYeah]

i have to make the multiplication and division in polar form but i'll try and figure it out on my own :')

[ahmedhamdy]

you just write conditions of polar form like that:

struct Complex e1;
int degree,r;

 if(e1.real==0)
 {

    degree=atan(e1.imag/e1.real);   // degree tan-1(imag/real) 

 }
 else
 {
   degree=0;

 }

 r=sqrt((e1.real*e1.real)+(e1.imag*e1.imag));  // r=squre root of(squre(real)+squre(imag))

[ahmedhamdy]

by this code you have polar form (r,degree) for complex number

 z=r*cos(degree)+i r*sin(degree)

[ahmedhamdy]

sorry correct code is :

struct Complex e1;
int degree,r;
 if(e1.real!=0)   // real not equal zero
 {
    degree=atan(e1.imag/e1.real);   // degree tan-1(imag/real) 
 }
 else
 {
   degree=0;
 }
 r=sqrt((e1.real*e1.real)+(e1.imag*e1.imag));  // r=squre root of(squre(real)+squre(imag))

[ThatBitchYeah]

okay so i was wrong, i have to do a menu driven program...basically i have to press 1 to add two complex numbers press 2 to subtract, press 3 to multiply and 4 to divide