Starting Out with C++: Early Objects
Starting Out with C++: Early Objects
8th Edition
ISBN: 9780133360929
Author: Tony Gaddis, Judy Walters, Godfrey Muganda
Publisher: Addison-Wesley
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Chapter 18, Problem 3PC
Program Plan Intro

Static Queue Template

Program Plan:

Main.cpp:

  • Include required header files.
  • Inside “main ()” function,
    • Declare a constant variable
    • Declare a template
    • Manipulate and insert elements into the queue using “enqueue ()” function.
    • Delete the queue elements using “dequeue ()” function.

Queue.h:

  • Include required header files.
  • Create template class
  • Declare a class named “Queue”. Inside the class,
    • Inside the “private” access specifier,
      • Create an object for the template
      • Declare required variables.
    • Inside “public” access specifier,
      • Declare constructor and destructor.
      • Declare the functions “enqueue ()”, “dequeue ()”, “isEmpty ()”, “isFull ()”, and “clear ()”.
  • Declare template class.
  • Give definition for the constructor.
    • Allocate memory dynamically for the template.
    • Assign the values.
  • Declare template class.
  • Give definition for the destructor.
    • Delete queue array and make it as null.
  • Declare template class.
  • Give function definition for “enqueue ()”.
    • Check whether the queue is full using “isFull ()” function.
      • If the condition is true then, print “The queue is full”.
      • If the condition is not true then,
        • Calculate the “rear” position.
        • Assign “num” to the “queue_Array [rear]”.
        • Increment the variable “numItems”.
  • Declare template class.
  • Give function definition for “dequeue ()”.
    • Check if the queue is empty using “isEmpty ()” function.
      • If the condition is true then print “The queue is empty”.
      • If the condition is not true then,
        • Calculate “front” position.
        • Assign the value of “queue_Array [front]” to the variable “num”.
        • Decrement the variable “numItems”.
  • Declare template class.
  • Give function definition for “isEmpty ()”.
    • Assign “true” to a Boolean variable
    • Check if “numItems” is true.
      • If the condition is true then assign “false” to the variable.
    • Return the Boolean variable.
  • Declare template class.
  • Give function definition for “isFull ()”.
    • Assign “true” to a Boolean variable
    • Check if “numItems” is less than “size”
      • If the condition is true then assign “false” to the variable.
    • Return the Boolean variable.
  • Declare template class.
  • Give function definition for “clear ()”.
    • Decrement queue size and assign it to “front”.
    • Decrement queue size and assign it to “rear”.
    • Assign 0 to the variable “numItems”.

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