Lab 4.1 Utilizing the code from Lab 3.2, add an overloaded operator == which will be...

Question

Question

Lab 4.1 Utilizing the code from Lab 3.2, add an overloaded operator == which will be...

Lab 4.1

Utilizing the code from Lab 3.2, add an overloaded operator == which will be used to compare

two objects to see if they are equal. For our purposes, two objects are equal if their abbreviation

and uldid are the same. You’ll need to make your overloaded operator a friend of the Cargo class.

Create a unit1 object and load it with this data:

uld – Pallet

abbreviation – PAG

uldid – PAG32597IB

aircraft - 737

weight – 3321 Kilograms

destination – SEA

Make a copy of unit1 called unit2 utilizing a copy constructor.

Create a default unit3.

Test with code like this in main:

if (unit1 == unit2)

cout << "\n unit1 is the same as unit2 \n";

else

cout << " \nunit1 is not the same as unit2 \n";

if (unit2 == unit3)

cout << " \nunit2 is the same as unit3 \n";

else

cout << " \nunit2 is not the same as unit3\n";

Lab 4.2

Using the code from lab 4.1, add the ability to read from a file.

Modify the input function:

* Move the input function out of the Cargo class to just below the end of the Cargo class

* At the bottom of the input function, declare a Cargo object named

temp using the constructor that takes the six parameters.

* Use the Cargo output function to print the Cargo object.

* Call the input function from the main function with no arguments. Remove the rest of the code

from main

3. Create a file and use it for input. This is good because you will be

using the input many times.

* Create a file named cardata4.txt (or use the one provided),

containing the following three lines of data.

If you create your own, make sure to follow the format

below:

Pallet PAG PAG45982IB 737 4978 OAK

Container AYF AYF23409AA 737 2209 LAS

Container AAA AAA89023DL 737 5932 DFW

* All weights are in pounds, don’t worry about kilograms. You may

comment out that code.

* In the input function, declare an object of type ifstream named

inputFile, which we will use to read from the file.

* At the beginning of the code for the input function, open the

file. If the open fails, send a message to stderr and exit the

program.

* In all the reads within the input function, remove the user

prompt and read from the inputFile object, rather than reading

from the stdin object.

* Hint: We need to use getline when reading the strings.

using >> skips leading white space before reading the data.

getline does not skip this leading whitespace. So, before using

getline use the following code:

while(inputFile.peek() == ' ')

inputFile.get();

peek looks at the next character you are about to read. If it is

a space, get is used to read the space character, to get it out

of the way. Your output will then be much neater.

* Use a loop to read each line from the file. To do this use a

while loop including all the reading in the input function, as

well building and output of the Car.

Hint: you can do this with the following while statement:

while(inputFile.peek() != EOF) or use this form while(inputFile >> type)

The peek function will return EOF if there is no next character.

* At the bottom of the input function, close the file.

Put an eye catcher before the beginning of each function, class, and the

global area:

// class name function name comment(if any)

*************************************************

Lab 3.2 code

#include<iostream>

#include<string>

using namespace std;

class Item

{

public:

string uld;

string abbreviation;

string uldid;

int aircraft;

double weight;

string destination;

Item()

{

}

Item(Item & i)

{

uld = i.uld;

abbreviation= i.abbreviation;

uldid=i.uldid;

aircraft=i.aircraft;

weight=i.weight;

destination=i.destination;

}

void print()

{

cout<<"uld -- "<<uld<<endl;

cout<<"abbreviation -- "<<abbreviation<<endl;

cout<<"uldid -- "<<uldid<<endl;

cout<<"aircraft -- "<<aircraft<<endl;

cout<<"weight -- "<<weight<<" Kilograms"<<endl;

cout<<"destination -- "<<destination<<endl;

}

friend void kilotopound(Item );

};

void kilotopound(Item I)

{

cout<<"Weight in pounds is: "<<I.weight*2.2<<" Pounds "<<endl;

}

int main()

{

Item I;

I.uld="Container";

I.uldid="ABB";

I.abbreviation="ABB315451B";

I.aircraft=737;

I.weight=1156;

I.destination="BUR";

Item I2(I);

//printing data

I.print();

kilotopound(I);

cout<<"Second Object\n";

I2.print();

//printing weight in pounds using kilopounds

kilotopound(I2);

return 0;

}

engineering Computer-Science

Add a comment Improve this question Transcribed image text

Answer 1

Answer #1

for lab 4.1-

code in text-

#include<iostream>
#include<string>
using namespace std;
class Item
{
public:
    string uld;
    string abbreviation;
    string uldid;
    int aircraft;
    double weight;
    string destination;
    Item()
    {

    }
    Item(Item & i)
    {
        uld = i.uld;
        abbreviation= i.abbreviation;
        uldid=i.uldid;
        aircraft=i.aircraft;
        weight=i.weight;
        destination=i.destination;
    }
    void print()
    {
        cout<<"uld -- "<<uld<<endl;
        cout<<"abbreviation -- "<<abbreviation<<endl;
        cout<<"uldid -- "<<uldid<<endl;
        cout<<"aircraft -- "<<aircraft<<endl;
        cout<<"weight -- "<<weight<<" Kilograms"<<endl;
        cout<<"destination -- "<<destination<<endl;

    }
    friend bool operator ==(Item &,Item &);//friend function
    friend void kilotopound(Item );
};
bool operator ==(Item &a, Item &b){//as given in the question only two values are compared
    if((a.abbreviation==b.abbreviation) && (a.uldid==b.uldid)){
        return true;
    }
    else{
        return false;
    }
}
void kilotopound(Item I)
{
    cout<<"Weight in pounds is: "<<I.weight*2.2<<" Pounds "<<endl;
}
int main()
{

    Item I;

    I.uld="Container";
    I.uldid="ABB";
    I.abbreviation="ABB315451B";
    I.aircraft=737;
    I.weight=1156;
    I.destination="BUR";

    Item I2(I);
    //printing data
    I.print();
    kilotopound(I);
    cout<<"Second Object\n";
    I2.print();
    //printing weight in pounds using kilopounds
    kilotopound(I2);
    Item unit1;//unit1 as given in question
    unit1.uld="Pallet";
    unit1.abbreviation="PAG";
    unit1.uldid="PAG32597IB";
    unit1.aircraft=737;
    unit1.weight=3321;
    unit1.destination="SEA";
    Item unit2(unit1),unit3(I);//initializing unit2 and unit 3 by default copy constructor
    if (unit1 == unit2)
        cout << "\n unit1 is the same as unit2 \n";
    else
        cout << " \nunit1 is not the same as unit2 \n";
    if (unit2 == unit3)
        cout << " \nunit2 is the same as unit3 \n";
    else
        cout << " \nunit2 is not the same as unit3\n";

    return 0;
}

screen shot of code-

3 5 6 #include<iostream> #include<string> using namespace std; -class Item { public: string uld; string abbreviation; string

31 32 33 cout<<aircraft -- <<aircraft<<endl; cout<<weight -- <<weight<< Kilograms<<endl; cout<<destination -- <<desti

60 I.weight=1156; I. destination=BUR; 61 62 63 64 65 66 67 68 69 70 71 72 73 74 Item 12(I); //printing data I.print(); kilo

output-

ABB uld -- Container abbreviation -- ABB315451B uldid aircraft 737 weight 1156 Kilograms destination -- BUR Weight in pounds

for lab 4.2

note- as a hint provided Hint: We need to use getline when reading the strings.

we take input as different values not as a sentence therefore getline is of no use in this case.

getline would only make code lengthy, if you want getline in your answer please comment down below I will edit the code according to that.

code in text-

#include<iostream>
#include <fstream>
#include<string>
using namespace std;
class Item
{
public:
    string uld;
    string abbreviation;
    string uldid;
    int aircraft;
    double weight;
    string destination;
    Item (){}
    Item(string iuld, string iabbreviation, string iuldid, int iaircraft, double iweight , string idestination)
    {
        uld=iuld;
        abbreviation=iabbreviation;
        uldid=iuldid;
        aircraft=iaircraft;
        weight=iweight;
        destination=idestination;
    }
    Item(Item & i)
    {
        uld = i.uld;
        abbreviation= i.abbreviation;
        uldid=i.uldid;
        aircraft=i.aircraft;
        weight=i.weight;
        destination=i.destination;
    }
    void print()
    {
        cout<<"uld -- "<<uld<<endl;
        cout<<"abbreviation -- "<<abbreviation<<endl;
        cout<<"uldid -- "<<uldid<<endl;
        cout<<"aircraft -- "<<aircraft<<endl;
        cout<<"weight -- "<<weight<<" Kilograms"<<endl;
        cout<<"destination -- "<<destination<<endl;

    }
    friend bool operator ==(Item &,Item &);//friend function
    friend void kilotopound(Item );
};
bool operator ==(Item &a, Item &b){//as given in the question only two values are compared
    if((a.abbreviation==b.abbreviation) && (a.uldid==b.uldid)){
        return true;
    }
    else{
        return false;
    }
}
void input(){
    ifstream inputFile;
    string iuld; string iabbreviation; string iuldid; int iaircraft; double iweight ; string idestination;//for input
    // of data
    inputFile.open("cardata4.txt");//opens file
    if(!inputFile){//if file fails to open
        cout << "file unable to open"<< endl;
        exit(0);
    }
    else{
        while(inputFile.peek() != EOF) {//till end of file
            while (inputFile.peek() == ' ')// as given in question
                inputFile.get();
            inputFile >> iuld >> iabbreviation >> iuldid >> iaircraft >> iweight >> idestination;//takes input from file
            Item temp(iuld, iabbreviation, iuldid, iaircraft, iweight, idestination);//passes t his vale to temp
            temp.print();//prints that value
        }
    }
    inputFile.close();

}
/*void kilotopound(Item I)
{
    cout<<"Weight in pounds is: "<<I.weight*2.2<<" Pounds "<<endl;
}
 *///because all weight are in pounds
int main()
{
    input();
    return 0;
}

screen shot of code-

1 3 4 5 6 7 8 #include<iostream> #include <fstream> #include<string> using namespace std; class Item { public: string uld; st

36 37 38 cout<<abbreviation -- <<abbreviation<<endl; cout<<uldid -- <<uldid<<endl; cout<<aircraft -- <<aircraft<<endl;

ifstream inputFile; string iuld; string iabbreviation; string iuldid; int iaircraft; double iweight ; string idestination;//f

input file-

4978 OAK 2 pallet Container AYF Container AAA PAG PAG45982IB 737 AYF23409AA 737 2209 AAA89023DL 737 5932 LAS 3 DFW

output-

uld Pallet abbreviation PAG uldid PAG45982IB aircraft 737 weight 4978 Kilograms destination ОАК uld Container abbreviation AY

If you have any further query feel free to ask in comment section, elseif you like this answer please give an UPVOTE.

Add a comment

Answer 2

Lab 4.1 Utilizing the code from Lab 3.2, add an overloaded operator == which will be...

Homework Answers

Add Answer to:
Lab 4.1 Utilizing the code from Lab 3.2, add an overloaded operator == which will be...

Post as a guest

Earn Coins

Lab 5.1 C++ Utilizing the code from Lab 4.2, replace your Cargo class with a new...

Please use my Lab 3.2 code for this assignment Lab 4.2 instruction Using the code from...

Please help fix my code C++, I get 2 errors when running. The code should be...

Hi please help with c++ programming. This is my code. there's a syntax error. PLEASE FIX...

CIS 22B Lab 3 Itty Bitty Airfreight (IBA) Topics: Friend functions Copy constructor ----------------------------------------------------------------------------------------------------------------------------------------- Lab 3.1...

#include<iostream> #include<string> #include<iomanip> using namespace std; /* *** Class Car * *************************** */ class Car {...

My C++ program is not compiling. Please explain how you fixed with detailed inline comments. I am using Visual Studio 2017. It's a character count program that keeps and displays a count of all th...

IP requirements: Load an exam Take an exam Show exam results Quit Choice 1: No functionality...

Define a class StatePair with two template types (T1 and T2), a constructor, mutators, accessors

In this lab, you will need to implement the following functions in Text ADT with C++...

Lab 4.1 Utilizing the code from Lab 3.2, add an overloaded operator == which will be...

Homework Answers

Add Answer to: Lab 4.1 Utilizing the code from Lab 3.2, add an overloaded operator == which will be...

Post as a guest

Earn Coins

Add Answer to:
Lab 4.1 Utilizing the code from Lab 3.2, add an overloaded operator == which will be...