Problem Solving with C++ plus MyProgrammingLab with Pearson eText-- Access Card Package (9th Edition)
Problem Solving with C++ plus MyProgrammingLab with Pearson eText-- Access Card Package (9th Edition)
9th Edition
ISBN: 9780133862218
Author: Walter Savitch
Publisher: PEARSON
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Chapter 12, Problem 1PP
Program Plan Intro

Percentage Calculation

Program Plan:

ADT interface filename: “Percent.h”

  • Include required header files.
  • Define a class “Percent”.
    • Declare function for overload operator “==” and “<”.
    • Declare default constructor for “Percent” class.
    • Declare a constructor for “Percent” class with one integer parameter.
    • Declare function for input overload operator and output overload operator.
    • Declare function for binary overload operators “+”, “-” and “*”.
    • Declare a member variable “value”.

ADT implementation filename: “Percent.cpp”

  • Include required header files.
  • Define default constructor for “Percent” class.
    • Here assign the value of “value” to “0”.
  • Define constructor for “Percent” class with one integer parameter “percentValue”.
    • In this constructor, assign “value” to “percentValue”.
  • Define a function for overload operator “<”.
    • This function is used to check whether the first percent is less than second percent or not.
  • Define a function for overload operator “==”.
    • This function is used to check whether the two percent’s are equal or not.
  • Define a function for input operator “>>”.
  • Define a function for input operator “<<”.
  • Define a function for binary overload operator “+” to compute the sum of two percentages.
    • In this function, create an object “sum”.
    • Then compute the addition of two percent’s.
    • Finally returns the result of addition.
  • Define a function for binary overload operator “-” to compute the subtraction of two percentages.
    • In this function, create an object “s”.
    • Then compute the subtraction of two percent’s.
    • Finally returns the result of subtraction.
  • Define a function for binary overload operator “*” to compute the multiplication of one percent and an integer value.
    • In this function, create an object “m”.
    • Then compute the multiplication of one percent and an integer value.
    • Finally returns the result of multiplication.

Application filename: “main.cpp”

  • Include required header files.
  • Define main function.
    • Create two objects “percent1” and “percent2” from “Percent” class.
    • Create an object “percent3” with one integer parameter “10”.
    • Declare an integer variable “intValue”.
    • Read the percentage 1 and percentage 2 from user.
    • Check the two percentages using “==” operator.
    • Check the two percentages using “<” operator.
    • Create an object “sumPercent” from “Percent” class.
    • Then compute and display sum of two percentages.
    • Create an object “subPercent” from “Percent” class.
    • Then compute and display difference of two percentages.
    • Display percentage 3 from assigned value.
    • Read an integer from user to multiply with a percentage 3.
    • Finally compute and display the multiplication of “percent3” and a user entered integer value.

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