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© 2010 Pearson Addison-Wesley. All rights reserved. Addison Wesley is an imprint of Chapter 11: Structure and Union Types Problem Solving & Program Design.

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Presentation on theme: "© 2010 Pearson Addison-Wesley. All rights reserved. Addison Wesley is an imprint of Chapter 11: Structure and Union Types Problem Solving & Program Design."— Presentation transcript:

1 © 2010 Pearson Addison-Wesley. All rights reserved. Addison Wesley is an imprint of Chapter 11: Structure and Union Types Problem Solving & Program Design in C Sixth Edition By Jeri R. Hanly & Elliot B. Koffman

2 1-2 © 2010 Pearson Addison-Wesley. All rights reserved. 1-2 Structures and Union Types A database is a collection of information stored in a computers memory or in a disk file. A database is subdivided into records, which normally contains information regarding specific data objects. The structure of the record is determined by the structure of the objects data type.

3 1-3 © 2010 Pearson Addison-Wesley. All rights reserved. 1-3 Structures and Union Types Define a structure type before it can be created or saved. #define STRSZ 10 typedef struct { char name[STRSZ]; double diameter; int moons; double orbit_time, rotation_time; } planet_t planet_t current_planet, previous_planet, blank_planet = {, 0, 0, 0, 0};

4 1-4 © 2010 Pearson Addison-Wesley. All rights reserved. 1-4 Figure 11.1 Assigning Values to Components of Variable current_planet p569

5 1-5 © 2010 Pearson Addison-Wesley. All rights reserved. 1-5 Figure 11.2 Function with a Structured Input Parameter

6 1-6 © 2010 Pearson Addison-Wesley. All rights reserved. 1-6 Figure 11.3 Function Comparing Two Structured Values for Equality

7 1-7 © 2010 Pearson Addison-Wesley. All rights reserved. 1-7 Figure 11.3 Function Comparing Two Structured Values for Equality (contd)

8 1-8 © 2010 Pearson Addison-Wesley. All rights reserved. 1-8 Figure 11.4 Function with a Structured Output Argument

9 1-9 © 2010 Pearson Addison-Wesley. All rights reserved. 1-9 Figure 11.5 Data Areas of main and scan_planet during Execution of status = scan_planet (¤t_planet);

10 1-10 © 2010 Pearson Addison-Wesley. All rights reserved. 1-10 Figure 11.6 Function get_planet Returning a Structured Result Type

11 1-11 © 2010 Pearson Addison-Wesley. All rights reserved. 1-11 Figure 11.7 Function to Compute an Updated Time Value

12 1-12 © 2010 Pearson Addison-Wesley. All rights reserved. 1-12 Figure 11.8 Structured Values as a Function Input Argument and as a Function Result

13 1-13 © 2010 Pearson Addison-Wesley. All rights reserved. 1-13 Figure 11.9 Data Type planet_t and Basic Operations

14 1-14 © 2010 Pearson Addison-Wesley. All rights reserved. 1-14 Figure 11.10 Partial Implementation of Type and Operators for Complex Numbers

15 1-15 © 2010 Pearson Addison-Wesley. All rights reserved. 1-15 Figure 11.10 Partial Implementation of Type and Operators for Complex Numbers (contd)

16 1-16 © 2010 Pearson Addison-Wesley. All rights reserved. 1-16 Figure 11.10 Partial Implementatio n of Type and Operators for Complex Numbers (contd)

17 1-17 © 2010 Pearson Addison-Wesley. All rights reserved. 1-17 Figure 11.10 Partial Implementation of Type and Operators for Complex Numbers (contd)

18 1-18 © 2010 Pearson Addison-Wesley. All rights reserved. 1-18 Figure 11.10 Partial Implementation of Type and Operators for Complex Numbers (contd)

19 1-19 © 2010 Pearson Addison-Wesley. All rights reserved. 1-19 Figure 11.11 An Array of Structures

20 1-20 © 2010 Pearson Addison-Wesley. All rights reserved. 1-20 Figure 11.12 Universal Measurement Conversion Program Using an Array of Structures

21 1-21 © 2010 Pearson Addison-Wesley. All rights reserved. 1-21 Figure 11.12 Universal Measurement Conversion Program Using an Array of Structures (contd)

22 1-22 © 2010 Pearson Addison-Wesley. All rights reserved. 1-22 Figure 11.12 Universal Measurement Conversion Program Using an Array of Structures (contd)

23 1-23 © 2010 Pearson Addison-Wesley. All rights reserved. 1-23 Figure 11.12 Universal Measurement Conversion Program Using an Array of Structures (contd)

24 1-24 © 2010 Pearson Addison-Wesley. All rights reserved. 1-24 Figure 11.12 Universal Measurement Conversion Program Using an Array of Structures (contd)

25 1-25 © 2010 Pearson Addison-Wesley. All rights reserved. 1-25 Figure 11.13 Data File and Sample Run of Measurement Conversion Program

26 1-26 © 2010 Pearson Addison-Wesley. All rights reserved. 1-26 Figure 11.14 Function That Displays a Structure with a Union Type Component

27 1-27 © 2010 Pearson Addison-Wesley. All rights reserved. 1-27 Figure 11.15 Two Interpretations of Parameter hair

28 1-28 © 2010 Pearson Addison-Wesley. All rights reserved. 1-28 Figure 11.16 Program to Compute Area and Perimeter of Geometric Figures

29 1-29 © 2010 Pearson Addison-Wesley. All rights reserved. 1-29 Figure 11.16 Program to Compute Area and Perimeter of Geometric Figures (contd)

30 1-30 © 2010 Pearson Addison-Wesley. All rights reserved. 1-30 Figure 11.16 Program to Compute Area and Perimeter of Geometric Figures (contd)

31 1-31 © 2010 Pearson Addison-Wesley. All rights reserved. 1-31 Figure 11.16 Program to Compute Area and Perimeter of Geometric Figures (contd)


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