#include <stdio.h>
typedef struct{
	float realpart;
	float imagpart;
}Complex;
void assign(Complex *A,float realpart,float imagpart);
void add(Complex *c,Complex A,Complex B);
void multiply(Complex *d,Complex A,Complex B);
void divide(Complex *e,Complex A,Complex B);
 int main(){
 	Complex z1,z2,z3,z4,z;
 	float real,imag;
 	assign(&z1,8.0,6.0);
 	assign(&z2,4.0,3.0);
 	add(&z3,z1,z2);
 	multiply(&z4,z1,z2);
 	divide(&z,z3,z4);
 	printf("real=%.4f imag=%.4f",z.realpart,z.imagpart);
 }
 void assign(Complex *A,float real,float imag){
 	A->realpart=real;
 	A->imagpart=imag;
 }
void add(Complex *c,Complex A,Complex B){
	c->realpart=A.realpart+B.realpart;
 	c->imagpart=A.imagpart+B.imagpart;
}
void multiply(Complex *d,Complex A,Complex B){
	d->realpart=A.realpart*B.realpart-A.imagpart*B.imagpart;
	d->imagpart=A.realpart*B.imagpart+A.imagpart*B.realpart;
}
void divide(Complex *e,Complex A,Complex B){
	Complex c,m;
	c.realpart=A.realpart;
	c.imagpart=-A.imagpart;
	multiply(&m,c,B);
	e->realpart=m.realpart/(c.imagpart*c.imagpart+c.realpart*c.realpart);
	e->imagpart=m.imagpart/(c.imagpart*c.imagpart+c.realpart*c.realpart);
}