C语言程序设计现代方法第16章答案

Chapter 16

Answers to Selected Exercises 2. [was #2; modified]

(a)

struct {

double real, imaginary;

} c1, c2, c3;

(b)

struct {

double real, imaginary;

} c1 = {0.0, 1.0}, c2 = {1.0, 0.0}, c3;

(c) Only one statement is necessary:

c1 = c2;

(d)

c3.real = c1.real + c2.real;

c3.imaginary = c1.imaginary + c2.imaginary;

4. [was #4; modified]

(a)

typedef struct {

double real, imaginary;

} Complex;

(b) Complex c1, c2, c3;

(c)

Complex make_complex(double real, double imaginary)

{

Complex c;

c.real = real;

c.imaginary = imaginary;