Data structures and algorithms in C++
Data structures and algorithms in C++
2nd Edition
ISBN: 9780470460443
Author: Goodrich
Publisher: WILEY
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Chapter 2, Problem 5C
Program Plan Intro

Produce an expected progression

Program plan:

  • Declare the header files and namespace.
  • Create a class “Progression”,
    • Define the constructor.
    • Declare the protected access specifier.
    • Declare the pure virtual methods.
    • Declare the necessary protected member variables.
  • Create a class “AbsValProgression” that extends “Progression”,
    • Declare the public member variables.
    • Define the method “firstValue()” to reset to the first value.
      • Assign the first value to the current value.
      • Assign the sum of first and second to the previous value.
      • Return the current value.
        • Define the method “nextValue()” to advances the next value.
          • Assign the current value to the temporary variable.
          • Check whether the previous value is greater than the current value,
            • If it is true, assign the difference between the previous and the current value to the current value.
          • Otherwise, subtract the previous value from the current value and assign to the current value.
          • Assign the temporary value to the previous value.
          • Return the current value.
        • Define the constructor “AbsValProgression()”,
          • Initialize the initial values for the first and second values.
  • Define the “main()” method,
    • Create array object for “AbsValProgression”.
    • Print the value returned from the method “firstValue()”.
    • Print the value returned from the method “nextValue()”.

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