/* 
 * cpx.c - implementation of a simple complex number package
 * version 1: value parameters & no dynamic allocation
 * CSE 413 demo 11/06 HP
 */

#include <stdio.h>
#include "cpx.h"

/* return a complex number with real part = x and imaginary = y */
Complex mk_complex(double x, double y) {
  Complex result;
  result.re = x;
  result.im = y;
  return result;
}

/* return the sum of complex numbers c and d */
Complex cpx_add(Complex c, Complex d) {
  return mk_complex(c.re+d.re, c.im+d.im);
}

/* store a string represtntation of c as re+im i in s */
void cpx2str(Complex c, char s[]) {
  sprintf(s, "%g+%gi", c.re, c.im);
}