1. Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Chapter 실 습실 습 7 WEEK 1 – 구조체 (STRUCTURES)

2. Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Slide 5- 2 학습목표 1. 구조체의 개념 학습 2. 구조체 멤버 접근하기 3. 구조체 멤버 초기화 방법 학습 4. 구조체를 매개변수로 사용하기 5. 중첩 구조체 사용 방법 학습 6. 구조체를 이용한 프로그램 개발

3. Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Slide 5- 3 LAB ASSIGNMENTS( 실습과제 ) Lesson 7A Lab 7.1 : 구조체 기초 Lab 7.2 : 구조체 초기화 Lab 7.3 : 중첩 구조체 Lesson 7B Lab 7.4: Student-Generated Code Assignments

4. Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Slide 5- 4 Lab 7.1 구조체 기초 http://ce.kyungil.ac.kr/~kykim/OOP2009/Lab 에서 download “rect_struct.cpp” // This program uses a // structure to hold data about a rectangle Exercise 1: 주석 부분에 대한 프로그램을 완성하라. Rectangle 구조체 선언, box 구조체 변수 정의, 각 필드 값 입력 및 출력. http://ce.kyungil.ac.kr/~kykim/OOP2009/Lab

5. Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Slide 5- 5 #include using namespace std; // Fill in the code to declare a structure named Rectangle which has // 4 double members: length, width, area, and perimeter. int main() { // Fill in the code to define a Rectangle variable named box. cout << "Enter the length of a rectangle: "; // Fill in the code to read in the length of box. cout << "Enter the width of a rectangle: "; // Fill in the code to read in the width of box. // Fill in the code to compute the area of box. // Fill in the code to compute the perimeter of box. cout << fixed << showpoint << setprecision(2); // Fill in the code to output the area with an appropriate message. // Fill in the code to output the perimeter with an appropriate message. return 0; } rect_struct.cpp

6. Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Slide 5- 6 Exercise 2: 사용자가 입력한 직사각형이 정사각형인지를 결정하는 코드를 추가하여 다음과 같이 동작하게 수정하라. ( 구조체 멤버를 비교할 것 ) Enter the length of a rectangle: 7 Enter the width of a rectangle: 7 The area of the rectangle is 49.00 The perimeter of the rectangle is 28.00 The rectangle is a square.

7. Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Slide 5- 7 Lab 7.2 구조체 초기화 http://ce.kyungil.ac.kr/~kykim/OOP2009/Lab 에서 download “ init_struct.cpp ” // This program demonstrates partially initialized // structure variables Exercise 1: 주석 부분에 대한 프로그램을 완성하라. Enter this year's income for Tim McGuiness : 30000 Name : Tim McGuiness Social Security Number : 255871234 Taxes due for this year: $10500.00 Enter this year's income for John Kane : 60000 Name : John Kane Social Security Number : 278990582 Taxes due for this year: $17400.00 http://ce.kyungil.ac.kr/~kykim/OOP2009/Lab

8. Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Slide 5- 8 #include using namespace std; struct taxPayer { char name[25]; // Uses a C-string, rather than a string object long int SSNum; // Social security number double taxRate; double income; double taxes; }; int main() { // Fill in the code to define and initialize a taxpayer structure variable // named citizen1 with the first 3 members initialized as follows: // name is Tim McGuiness, SSNum is 255871234, and taxRate is.35 // Fill in the code to define and initialize a taxpayer structure variable // named citizen2 with the first 3 members initialized as follows: // name is John Kane, SSNum is 278990582, and taxRate is.29 init_struct.cpp

9. Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Slide 5- 9 cout.precision(2); // Works the same as cout << setprecision(2); cout << fixed << showpoint; // Fill in the code to prompt the user to enter this year's income // for citizen1. // Fill in the code to read this income into citizen1's appropriate // structure member. // Fill in the code to calculate taxes for citizen1 and store it // in his appropriate structure member. // Fill in the code to repeat the same steps for citizen2. cout << "Name: " << citizen1.name << endl; cout << "Social Security Number: " << citizen1.SSNum << endl; cout << "Taxes due for this year: " << citizen1.taxes << endl << endl; // Fill in the code to print out the same information for citizen2. return 0; } init_struct.cpp

10. Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Slide 5- 10 http://ce.kyungil.ac.kr/~kykim/OOP2009/Labhttp://ce.kyungil.ac.kr/~kykim/OOP2009/Lab 에서 download “con_struct.cpp” // This program demonstrates using a // constructor to initialize structure members. Exercise 2: 주석 부분에 대한 프로그램을 완성하라. 구조체 멤버의 초기화를 위해 생성자 함수를 이용할 것. Default constructor 함수와 3 개의 매개 변수를 가지는 생성자 함수 사용.

11. Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Slide 5- 11 #include using namespace std; struct taxPayer { string name; // Uses a string object, rather than a C-String long int SSNum; // Social security number double taxRate; double income; double taxes; taxPayer() // Constructor { name = ""; SSNum = 000000000; taxRate = 0; } // Fill in the code to create another constructor that has the parameters: n, id and // rate. name will be set to the value of n, SSNum will be set to the value of id and // taxRate will be set to the value of rate. }; con_struct.cpp

12. Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Slide 5- 12 int main() { // Fill in the code to define and initialize (through the use of a constructor) a // taxPayer structure variable name citizen1 with the first 3 members initialized as // follows: name is Tim McGuiness, SSNum is 255871234, and taxRate is.35 // Fill in the code to define and initialize (to the default values) a taxPayer // structure variable named citizen2. // Fill in the code to set citizen2's name to John Brown. cout.precision(2); // Works the same as cout << setprecision(2); cout << fixed << showpoint; // Fill in the code to prompt for and input this year's income for citizen1, storing it // in citizen1's appropriate structure member. // Fill in the code to calculate taxes for citizen1 and store it in his appropriate // structure member. // Fill in the code to repeat the same steps for citizen2. cout << "Name: " << citizen1.name << endl; cout << "Social Security Number: " << citizen1.SSNum << endl; cout << "Taxes due for this year: " << citizen1.taxes << endl << endl; // Fill in the code to print out the same information for citizen2. return 0; }

13. Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Slide 5- 13 Lab 7.3 중첩 구조체 http://ce.kyungil.ac.kr/~kykim/OOP2009/Lab 에서 download “ nestedRect_struct.cpp ” // This program uses a structure to hold data about a // rectangle.( 중첩 구조체 ) // Dimension structure inside a Rectangle structure Exercise 1: 주석 부분에 대한 프로그램을 완성하라. http://ce.kyungil.ac.kr/~kykim/OOP2009/Lab

14. Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Slide 5- 14 #include using namespace std; // Fill in the code to declare a structure named Dimension that contains // 2 double members: length and width. // Fill in the code to declare a structure named Rectangle that contains 3 members: // area, perimeter, and size. The first two should each be a double but // size should be a Dimension structure variable. nestedRect_struct.cpp

15. Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Slide 5- 15 int main() { // Fill in the code to define a Rectangle variable named box. cout << "Enter the length of a rectangle: "; // Fill in the code to read in the length and store it in the // appropriate box location. cout << "Enter the width of a rectangle: "; // Fill in the code to read in the width and store it in the // appropriate box location. // Fill in the code to compute the box area and store it in the // appropriate box location. // Fill in the code to compute the box perimeter and store it in // the appropriate box location. cout << fixed << showpoint << setprecision(2); cout << "The area of the rectangle is " << // Fill this in. cout << "The perimeter of the rectangle is " << // Fill this in. return 0; }

16. Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Slide 5- 16 Exercise 2: area( 면적 ) 와 perimeter( 둘레 ) 을 멤버로 가지는 구조체 Results 를 정의하고, 직사각형 구조체인 Rectangle 을 다음과 같이 선언한 다음 Exercise 1 의 결과와 같이 되도록 수정하라. struct Rectangle { Dimension size; Results stat; };

17. Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Slide 5- 17 Exercise 3: Exercise 2 에서 정의한 직사각형에 대한 중첩 구조체 Rectangle 을 이용하되, 면적과 둘레를 계산하기 위한 함수 findArea 와 findPerimeter 를 사용하도록 수정하라. 이 두 함수는 Dimension 자료형을 매개변수로 전달 받아 계산한 다음 그 결과를 double 로 반환하게 하고 이 값을 box 의 적절한 멤버에 저장하게 한 다음 출력하게 하라. /* findArea * * This function returns the area of a rectangle when passed * * a Dimension structure variable containing a length and a width */ /* findPerimeter * * This function returns the perimeter of a rectangle when passed * * a Dimension structure variable containing a length and a width */

18. Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Slide 5- 18 Lab 7.4 독립적인 소형 프로그램 개발

19. Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Slide 5- 19 Thanks!!!!!!!!