/* cpp_problems_02 */
/* struct and class */


// #1 Fill the blank 
/* Using struct, implement the complex number */
#include <iostream>

using namespace std;

struct complex_t {
	double re;
	double im;
};

void printcomplex (complex_t c)
{
	// Fill this blank
} 

complex_t add (complex_t c1, complex_t c2)
{
	// Fill the blank
}
	
int main(void)
{
	complex_t c1, c2;
	c1.re = 3;
	c1.im = - 4.0 / 5;
	c2.re = -2.5;
	c2.im = 5.0;
	printcomplex(c1);
	printcomplex(c2);
	printcomplex(add(c1,c2));
	return 0;
}

/*  result
	3 - 0.8i
	-2.5 + 5i
	0.5 + 4.2i
*/

// #2 Try to make another functions, 
// such as subtraction and multiplication.

/* #3 
http://www.cplusplus.com/doc/tutorial/templates/
Extend CVector to R^3 and implement +, *(scalar multiplication), and
dot product
*/