Problem Solving with C++ (9th Edition)
Problem Solving with C++ (9th Edition)
9th Edition
ISBN: 9780133591743
Author: Walter Savitch
Publisher: PEARSON
Question
Book Icon
Chapter 5.2, Problem 12STE
Program Plan Intro

void Functions:

  • A function must either return a single or no value.
  • A function where no value is returned is termed as “void” function.
  • The “void” function is been defined in same way as function that would return a value.
  • It implements only subtask for complete problem.
  • If a “void” function is called, formal parameters are substituted with arguments.
  • The statements in function body are executed.
  • The “return” statement specifies value that is been returned.

Call-by-Reference:

  • It is a method for substituting arguments.
  • The argument is substituted for formal parameter.
  • The function call arguments may be a variable.
  • This argument variable is substituted for formal parameter.
  • It is similar to copying of argument variables into function definition body in place of formal parameter.
  • The function body code is been executed once argument is substituted.
  • This code can change argument variable value.
  • The ampersand sign (&) is attached to end of type name in formal parameter list in both function declaration as well as function header definition.

Call-by-value:

  • It copies actual value of an argument into function’s formal parameter.
  • The changes made to parameter inside function have no effect on argument.
  • This technique is used in default in programs.
  • The code within a function could not alter arguments that are used for calling function.

Program Plan Intro

void Functions:

  • A function must either return a single or no value.
  • A function that would not return a value is termed as “void” function.
  • The “void” function is been defined in same way as function that would return a value.
  • It implements only subtask for complete problem.
  • If a “void” function is called, formal parameters are substituted with arguments.
  • The statements in function body are executed.
  • The “return” statement specifies value that is been returned.

Call-by-Reference:

  • It is a method for substituting arguments.
  • The argument is substituted for formal parameter.
  • The function call arguments may be a variable.
  • This argument variable is substituted for formal parameter.
  • It is similar to copying of argument variables into function definition body in place of formal parameter.
  • The function body code is been executed once argument is substituted.
  • This code can change argument variable value.
  • The ampersand sign (&) is attached to end of type name in formal parameter list in both function declaration as well as function header definition.

Call-by-value:

  • It copies actual value of an argument into function’s formal parameter.
  • The changes made to parameter inside function have no effect on argument.
  • This technique is used in default in programs.
  • The code within a function could not alter arguments that are used for calling function.

Blurred answer
Students have asked these similar questions
Activity No. Activity Time (weeks) Immediate Predecessors 1 Requirements collection 3 2 Requirements structuring 4 1 3 Process analysis 3 2 4 Data analysis 3 2 5 Logical design 50 3,4 6 Physical design 5 5 7 Implementation 6 6 c. Using the information from part b, prepare a network diagram. Identify the critical path.
Given the following Extended-BNF grammar of the basic mathematical expressions:  Show the derivation steps for the expression: ( 2 + 3 ) * 6 – 20 / ( 3 + 1 ) Draw the parsing tree of this expression. SEE IMAGE
Whentheuserenters!!,themostrecentcommandinthehistoryisexecuted.In the example above, if the user entered the command: Osh> !! The ‘ls -l’ command should be executed and echoed on user’s screen. The command should also be placed in the history buffer as the next command. Whentheuserentersasingle!followedbyanintegerN,theNthcommandin the history is executed. In the example above, if the user entered the command: Osh> ! 3 The ‘ps’ command should be executed and echoed on the user’s screen. The command should also be placed in the history buffer as the next command. Error handling: The program should also manage basic error handling. For example, if there are no commands in the history, entering !! should result in a message “No commands in history.” Also, if there is no command corresponding to the number entered with the single !, the program should output "No such command in history."

Chapter 5 Solutions

Problem Solving with C++ (9th Edition)

Knowledge Booster
Background pattern image
Similar questions
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
C++ Programming: From Problem Analysis to Program...
Computer Science
ISBN:9781337102087
Author:D. S. Malik
Publisher:Cengage Learning
Text book image
C++ for Engineers and Scientists
Computer Science
ISBN:9781133187844
Author:Bronson, Gary J.
Publisher:Course Technology Ptr
Text book image
EBK JAVA PROGRAMMING
Computer Science
ISBN:9781337671385
Author:FARRELL
Publisher:CENGAGE LEARNING - CONSIGNMENT
Text book image
Microsoft Visual C#
Computer Science
ISBN:9781337102100
Author:Joyce, Farrell.
Publisher:Cengage Learning,
Text book image
Np Ms Office 365/Excel 2016 I Ntermed
Computer Science
ISBN:9781337508841
Author:Carey
Publisher:Cengage
Text book image
Programming with Microsoft Visual Basic 2017
Computer Science
ISBN:9781337102124
Author:Diane Zak
Publisher:Cengage Learning