cmplx_sp.cpp

复数的四则运算 如何用数据结构实现复数的四则运算

#include	<iostream.h>

struct  Complex  {
	double  real;
	double  iamge;
};

void  cmplx_prt(struct  Complex);
void  cmplx_ipt(struct  Complex *);
void  cmplx_add(struct  Complex *, struct  Complex, struct  Complex);
void  cmplx_sub(struct  Complex *, struct  Complex, struct  Complex);
void  cmplx_mul(struct  Complex *, struct  Complex, struct  Complex);
void  cmplx_div(struct  Complex *, struct  Complex, struct  Complex);

void  main(void)  {
	struct  Complex  op1, op2, result;
	
	cmplx_ipt(&op1);
	cmplx_ipt(&op2);
	cmplx_add(&result, op1, op2);
	cmplx_prt(op1);  cout<<" + ";  cmplx_prt(op2);  cout<<" = ";  cmplx_prt(result);  cout<<endl;
	cmplx_sub(&result, op1, op2);
	cmplx_prt(op1);  cout<<" - ";  cmplx_prt(op2);  cout<<" = ";  cmplx_prt(result);  cout<<endl;
	cmplx_mul(&result, op1, op2);
	cmplx_prt(op1);  cout<<" * ";  cmplx_prt(op2);  cout<<" = ";  cmplx_prt(result);  cout<<endl;
	cmplx_div(&result, op1, op2);
	cmplx_prt(op1);  cout<<" / ";  cmplx_prt(op2);  cout<<" = ";  cmplx_prt(result);  cout<<endl;
}

void  cmplx_prt(struct  Complex  c)  {
	cout<<'('<<c.real<<(c.iamge<0 ? '-' : '+')<<(c.iamge<0 ? -c.iamge : c.iamge)<<"i)";
	return;
}  // cmplx_prt

void  cmplx_ipt(struct  Complex *  c)  {
	char  s, i;
	cout<<" Please input a complex in the form of a+bi -- ";
	cin>>c->real>>s>>c->iamge>>i;
	if  (s == '-')  c->iamge=-c->iamge;
	return;
}  // cmplx_ipt

void  cmplx_add(struct  Complex * c, struct  Complex o1, struct  Complex o2)  {
	c->real=o1.real+o2.real;
	c->iamge=o1.iamge+o2.iamge;
	return;
}  // cmplx_add

void  cmplx_sub(struct  Complex * c, struct  Complex o1, struct  Complex o2)  {
	c->real=o1.real-o2.real;
	c->iamge=o1.iamge-o2.iamge;
	return;
}  // cmplx_sub

void  cmplx_mul(struct  Complex * c, struct  Complex o1, struct  Complex o2)  {
	c->real=o1.real*o2.real-o1.iamge*o2.iamge;
	c->iamge=o1.iamge*o2.real+o1.real*o2.iamge;
	return;
}  // cmplx_mul

void  cmplx_div(struct  Complex * c, struct  Complex o1, struct  Complex o2)  {
	double  b;

	b=o2.real*o2.real+o2.iamge*o2.iamge;
	c->real=(o1.real*o2.real+o1.iamge*o2.iamge)/b;
	c->iamge=(o1.iamge*o2.real-o1.real*o2.iamge)/b;
	return;
}  // cmplx_div