Question

Hi please help with c++ programming.

CIS 22B Lab 3 Itty Bitty Airfreight (IBA) 200 Points Topics: Friend functions Copy constructor Lab 3.1 Create your objects in the stack (not on the heap). Add a friend function, kilotopound, which will convert kilograms to pounds. Change your weight mutator to ask whether weight is input in kilograms or pounds. If it is kilograms, call the friend function kilotopound to convert it to pounds and return pounds. There are 2.2 pounds in one kilogram. Create an object on the stack with the following information: uld - Container abbreviation - AYK uldid - AYK689431B aircraft - 737 weight - 1654 Kilograms destination - PDX Output the contents of your object. Lab 3.2 Utilizing Lab 3.1 code, add a copy constructor. Create an object on the stack using the following data: uld - Container abbreviation - ABB uldid - ABB315451B aircraft - 737 weight - 1156 destination - BUR Copy the first object using a copy constructor. Output the contents of both objects.

This is my code. there's a syntax error. PLEASE FIX MY CODE instead of re-designing the program.

Thanks

/*
  

Description of problem:
Introduction to Friends functions.
Create objects in the stack (not on the heap)
3.1: Add a friend function, kilotopound, which will convert kilograms to pounds.
3.2: Add a copy constructor utilizing Lab 3.1 code.
Copy the fist object using a copy constructor. Output the contents of both objects.
*/

#include <iostream>
#include <string>
using namespace std;

// class to define the parameters of the load;

class load

{

//private members
private:
string uId;
string abbreviation;
string uldid;
string aircraft;
double weight;
string destination;

//public functions
public:

//default constructor

//doesn't require any function body

load()

{

;

}

//copy constructor
load(const load &l);

//mutator function
void input();

//this function prints the elements in object
void output();

//friend function to convert kilo to pounds SOLUTION TO LAB 3.1
friend void kilotopound(load &l);

};

/******************************* main ****************************************/

int main ()
{

load container;
container.input(); // Calling separate function for taking input.
container.output(); // Calling separate function for displaying output.

//defining a new object on stack
//using copy constructor
load obj2(container);
cout << "\n\nobject 2 made using copy constructor: ";

//output second object
obj2.output();

return 0;

}

//copy constructor definintion
   load::load(const load &l)

{
uId = l.uId;
abbreviation = l.abbreviation;
uldid = l.uldid;
aircraft = l.aircraft;
weight = l.weight;
destination = l.destination;
}

/**************************** Input ******************************

Read all the data from the user.

After all the data has been read, put all this data into the object.

*/

void load::input()
{

string x="";
double w=0;
char ch;
cout<<"Enter uId: "; cin>>x;
this->uId = x;
cout<<"Enter abbreviation: "; cin>>x;
this->abbreviation = x;
cout<<"Enter uldid: "; cin>>x;
this->uldid = x;
cout<<"Enter aircraft: "; cin>>x;
this->aircraft = x;
cout<<"Enter weight: "; cin>>w;
cout << "Is this weight in kilograms? (y/n): ";
cin >> ch;
this->weight = w;
cout<<"Enter destination: "; cin>>x;
this->destination = x;

//if the user wants weight to be converted to pounds
//call kilotopound and pass the current object

if(ch == 'y' || ch == 'Y')
kilotopound(*this);

}

/******************************** Output ********************************
Print the data in a neat format
*/

void load::output()
{
cout<<"\nuId:"<< uId ;
cout<<"\nabbreviation: " << abbreviation;
cout<<"\nuldid: " << uldid;
cout<<"\naircraft: " << aircraft;
cout<<"\nweight: " << weight;
cout<<"\ndestination: " << destination;
}

//friend function of load class
  
//it accepts an object of type load

//and converts its weight member to

//weight in pounds

void kilotopound(load &l)

{

l.weight = l.weight * 2.2;

/* Execution Results
LAB 3.1 SOLUTION
Enter uId: Container
Enter abbreviation: AYK   
Enter uldid: AYK68943IB   
Enter aircraft: 737   
Enter weight: 1654
Is this weight in kilograms? (y/n): y   
Enter destination: PDX

uId:Container   
abbreviation: AYK   
uldid: AYK68943IB   
aircraft: 737   
weight: 3638.8
destination: PDX

LAB 3.2 SOLUTION
Enter uId: Container
Enter abbreviation: ABB   
Enter uldid: ABB31545IB   
Enter aircraft: 737   
Enter weight: 1156
Is this weight in kilograms? (y/n): y   
Enter destination: BUR

uId:Container   
abbreviation: ABB   
uldid: ABB31545IB   
aircraft: 737   
weight: 2543.2
destination: BUR

object 2 made using copy constructor:   
uId:Container   
abbreviation: ABB   
uldid: ABB31545IB   
aircraft: 737   
weight: 2543.2
destination: BUR


...Program finished with exit code 0   
Press ENTER to exit console.   
*/

Answer 1

• there is a missing } at the end of the kilotopound() funciton definition.
• That is the only error, the program runs perfectly once that modified.

Modified program:

• Note: the only change being is made is a } bracket being added at the end of the program

#include <iostream>
#include <string>
using namespace std;

// class to define the parameters of the load;

class load

{

//private members
private:
string uId;
string abbreviation;
string uldid;
string aircraft;
double weight;
string destination;

//public functions
public:

//default constructor

//doesn't require any function body

load()

{
;
}

//copy constructor
load(const load &l);

//mutator function
void input();

//this function prints the elements in object
void output();

//friend function to convert kilo to pounds SOLUTION TO LAB 3.1
friend void kilotopound(load &l);

};

/******************************* main ****************************************/

int main ()
{

load container;
container.input(); // Calling separate function for taking input.
container.output(); // Calling separate function for displaying output.

//defining a new object on stack
//using copy constructor
load obj2(container);
cout << "\n\nobject 2 made using copy constructor: ";

//output second object
obj2.output();

return 0;

}

//copy constructor definintion
load::load(const load &l)

{
uId = l.uId;
abbreviation = l.abbreviation;
uldid = l.uldid;
aircraft = l.aircraft;
weight = l.weight;
destination = l.destination;
}

/**************************** Input ******************************

Read all the data from the user.

After all the data has been read, put all this data into the object.

*/

void load::input()
{

string x="";
double w=0;
char ch;
cout<<"Enter uId: "; cin>>x;
this->uId = x;
cout<<"Enter abbreviation: "; cin>>x;
this->abbreviation = x;
cout<<"Enter uldid: "; cin>>x;
this->uldid = x;
cout<<"Enter aircraft: "; cin>>x;
this->aircraft = x;
cout<<"Enter weight: "; cin>>w;
cout << "Is this weight in kilograms? (y/n): ";
cin >> ch;
this->weight = w;
cout<<"Enter destination: "; cin>>x;
this->destination = x;

//if the user wants weight to be converted to pounds
//call kilotopound and pass the current object

if(ch == 'y' || ch == 'Y')
kilotopound(*this);

}

/******************************** Output ********************************
Print the data in a neat format
*/

void load::output()
{
cout<<"\nuId:"<< uId ;
cout<<"\nabbreviation: " << abbreviation;
cout<<"\nuldid: " << uldid;
cout<<"\naircraft: " << aircraft;
cout<<"\nweight: " << weight;
cout<<"\ndestination: " << destination;
cout<<"\n";
}

//friend function of load class
  
//it accepts an object of type load

//and converts its weight member to

//weight in pounds

void kilotopound(load &l)

{

l.weight = l.weight * 2.2;
}

sample input and output:

Enter uId: 3452 Enter abbreviation: ghf Enter uldid: 2424424 Enter aircraft: flyemrt Enter weight: 2352.43 Is this weight in kilograms? (y/n): y Enter destination: chicago uId: 3452 abbreviation: ghf uldid: 2424424 aircraft: flyemrt weight: 5175.35 destination: chicago object 2 made using copy constructor: uid:3452 abbreviation: ghf uldid: 2424424 aircraft: flyemrt weight: 5175.35 destination: chicago