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Chapter 5 Functions for All Subtasks

Overview ,[object Object],[object Object],[object Object],[object Object],[object Object],Slide 5-

void-Functions ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Slide 5-

void-Function Definition ,[object Object],[object Object],[object Object],[object Object],[object Object],Slide 5- Display 5.1

Using a void-Function ,[object Object],[object Object],[object Object],[object Object],Slide 5-

void-Function Calls ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Slide 5-

Example: Converting Temperatures ,[object Object],[object Object],Slide 5- Display 5.2 (1) Display 5.2 (2)

void-Functions Why Use a Return? ,[object Object],[object Object],[object Object],[object Object],Slide 5- Display 5.3

The Main Function ,[object Object],[object Object],[object Object],Slide 5-

Section 5.1 Conclusion ,[object Object],[object Object],[object Object],[object Object],Slide 5-

5.2 Call-By-Reference Parameters

Call-by-Reference Parameters ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Slide 5-

Call-by-Reference Example ,[object Object],[object Object],[object Object],Slide 5- Display 5.4 (1) Display 5.4 (2)

Call-By-Reference Details ,[object Object],[object Object],[object Object],Slide 5- Display 5.5 (1) Display 5.5 (2)

Call Comparisons Call By Reference vs Value ,[object Object],[object Object],[object Object],[object Object],Slide 5- Memory Name Location Contents age 1001 34 initial 1002 A hours 1003 23.5 1004

Example: swap_values ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Slide 5-

Mixed Parameter Lists ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Slide 5-

Choosing Parameter Types ,[object Object],[object Object],[object Object],[object Object],Slide 5- Display 5.6

Inadvertent Local Variables ,[object Object],[object Object],[object Object],[object Object],[object Object],Slide 5- Display 5.7

5.3 Using Procedural Abstraction

Using Procedural Abstraction ,[object Object],[object Object],[object Object],Slide 5-

Functions Calling Functions ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Slide 5- Display 5.8 (1) Display 5.8 (2)

Pre and Postconditions ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Slide 5-

swap_values revisited ,[object Object],Slide 5-

Function celsius ,[object Object],Slide 5-

Why use preconditions and postconditions? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Slide 5-

Case Study Supermarket Pricing ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Slide 5-

Supermarket Pricing: Problem Analysis ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Slide 5-

Supermarket Pricing: Function get_input ,[object Object],Slide 5-

Supermarket Pricing: Function price ,[object Object],Slide 5-

Supermarket Pricing: Function give_output ,[object Object],Slide 5-

Supermarket Pricing: The main function ,[object Object],Slide 5-

Supermarket Pricing: Algorithm Design -- price ,[object Object],[object Object],[object Object],Slide 5-

Supermarket Pricing: Constants for The price Function ,[object Object],[object Object],[object Object],[object Object],Slide 5-

Supermarket Pricing: Coding The price Function ,[object Object],[object Object],[object Object],Slide 5- Display 5.9 (1) Display 5.9 (2) Display 5.9 (3)

Supermarket Pricing : Program Testing ,[object Object],[object Object],[object Object],[object Object],[object Object],Slide 5-

Testing and Debugging Functions ,[object Object],[object Object],[object Object],[object Object],[object Object],Slide 5- Display 5.10 (1) Display 5.10 (2)

Stubs ,[object Object],[object Object],[object Object],[object Object],[object Object],Slide 5- Display 5.11 (1) Display 5.11 (2)

Rule for Testing Functions ,[object Object],[object Object],Slide 5-

Section 5.4 Conclusion ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Slide 5-

5.5 General Debugging Techniques

General Debugging Techniques ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Slide 5-

General Debugging Techniques ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Slide 1- Display 5.12 Display 5.13

General Debugging Techniques ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Slide 5-

Assert Example ,[object Object],Slide 5-

Section 5.5 Conclusion ,[object Object],[object Object],[object Object],[object Object],[object Object],Slide 5-

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