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.