You have a class ImperialLength that stores values in inches. It can covert to a

Question

You have a class ImperialLength that stores values in inches. It can covert to and from feet and inches to total-inches.

The current class is implemented with files ImperialLength.handImplerialLength.cpp.

I have also give you a file ImperialLengthDriver.cpp that can be used to test the updated version of the class you will be building.

The current implementation of the ImperialLength class contains the following class declaration:

class ImperialLength

{

       private:

              double totalInches;

       public:

              ImperialLength(int feet, double inches);

              ImperialLength(double totalInches);

              ~ImperialLength();

              std::string to_string(int precision = 6) const;

              int getFeet() const;

              double getInches() const;

              double getTotalInches() const;

};

You will be overloading the operators +=, +, -= and

Explanation / Answer

#ifndef IMPERIALLENGTH_H_

#define IMPERIALLENGTH_H_

#include <string>

#include <iostream>

class ImperialLength

{

private:

double totalInches;

public:

ImperialLength(int feet, double inches);

ImperialLength(double totalInches);

~ImperialLength();

std::string to_string(int precision = 6) const;

int getFeet() const;

double getInches() const;

double getTotalInches() const;

ImperialLength operator+(const ImperialLength& ln);

ImperialLength operator+=(const ImperialLength& ln);

ImperialLength operator-(const ImperialLength& ln);

ImperialLength operator-=(const ImperialLength& ln);

string operator<<(const ImperialLength& ln);

};

#endif /* IMPERIALLENGTH_H_ */

/*

* ImperialLength.cpp

*

* Created on: Apr 1, 2015

* Author: dgv130030

*/

#include "ImperialLength.h"

#include <string>

#include <ostream>

#include <sstream>

#include <iomanip>

using namespace std;

// Create an imperial length object using feet and inches

ImperialLength::ImperialLength(int feet, double inches)

{

// store the length internally as (total) inches.

totalInches = feet * 12.0 + inches;

}

ImperialLength::ImperialLength(double totalInches)

{

// store the length internally as total inches.

this->totalInches = totalInches;

}

ImperialLength::~ImperialLength()

{

// nothing to do here

}

// convert to the number of feet

int ImperialLength::getFeet() const

{

// get the total inches and divide by 12. Note that we don't want fractional feet

return static_cast<int>(totalInches) / 12;

}

double ImperialLength::getInches() const

{

// get the remaining inches. Calculate the number of remaining inches after removing all of the feet.

// There may be a fractional inch since inches are store as a double value.

return totalInches - (getFeet() * 12.0);

}

double ImperialLength::getTotalInches() const

{

// just return the total inches

return totalInches;

}

std::string ImperialLength::to_string(int precision) const

{

// we use the output string stream to build the output for to_string.

// Note that we set the precision for the output of the inches.

// The format is xx'yy.yy" or yy.yy" if feet is 0.

ostringstream outString;

int feet = getFeet();

if (feet != 0)

{

// output the feet

outString << getFeet() << "'";

}

// output the inches

outString << fixed << setprecision(precision) << getInches() << """;

// return the string value of the ostringstream back to the caller

return outString.str();

}

ImperialLength ImperialLength::operator+(const ImperialLength& ln)

{

this->totalInches = this->getInches() + ln.getInches();

int totfeet = this->getFeet() + ln.getFeet();

ImperialLength newln(totfeet,this->totalInches);

return newln;

}

ImperialLength ImperialLength::operator+=(const ImperialLength& ln)

{

this->totalInches = this->getInches() + ln.getInches();

int totfeet = this->getFeet() + ln.getFeet();

ImperialLength(totfeet,this->totalInches);

return *this;

}

ImperialLength ImperialLength::operator-(const ImperialLength& ln)

{

this->totalInches = this->getInches() - ln.getInches();

int totfeet = this->getFeet() - ln.getFeet();

ImperialLength newln(totfeet,this->totalInches);

return newln;

}

ImperialLength ImperialLength::operator-=(const ImperialLength& ln)

{

this->totalInches = this->getInches() - ln.getInches();

int totfeet = this->getFeet() - ln.getFeet();

ImperialLength(totfeet,this->totalInches);

return *this;

}

string ImperialLength::operator<<(const ImperialLength& ln)

{

return ln.to_string(3);

}

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