Need to create a C++ program with following criteria: price: positive whole numb

Question

Need to create a C++ program with following criteria:

price: positive whole number, between 0-9999. Randomly generated.
color: a string, out of red, blue, white, black, gray, green, yellow. Randomly selected.
VIN: positive whole number, 5 chars, should have two A-to-Z chars. Randomly generated in your program.
year: between, 1950 and 2017. Randomly generated.
owner: One word string, having only a-z and A-Z. The first letter is capitalized, the rest are lowercase. Randomly generated.

Program should have a class contain following functions:

-Create a bag
- Add a new car (all data pieces will be randomly created)
- Search a car with VIN
- List VINs of the cars what are specified by a color. (for instance, VINs of all white cars)
- List VINs of the cars what are specified by owner name. (search by owner name)
- Remove a car with VIN
- Remove the last car (the one just added)
- Remove all cars (do not forget to free structs from memory)
- Get the number of cars in the bag

The program also automatically add 1000 cars to the bag once the program is run.

Explanation / Answer

The template provided has been modified to implement a linked list version with all the features and functions required. The code for that is :

#include <stdio.h>
#include <stdlib.h>
#include <cstring>
#include <iostream>
#include <string>

using namespace std;

struct CarNode {
Car carObject;
struct CarNode * nextCar;
};

class Car {
private:
string colorOptions[] = {
"red",
"blue",
"white",
"black",
"gray",
"green",
"yellow"
};
string upperCase = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
string lowerCase = "abcdefghijklmnopqrstuvwxyz";
string numbers = "0123456789";
int price = 0;
string color;
string vin;
string owner;
int year;

void setColor() {
int option = rand() * 7;
this.color = colorOptions[option];
}
void setPrice() {
this.price = rand() * 10000;
}
void setOwner() {
string nameVal = upperCase[(rand() * 26)];
int nameSize = (rand() * 50) + 10;
for (int i = 0; i < nameSize; i++) {
int index = rand() * 26;
nameVal = nameVal + lowerCase[index];
}
this.name = nameVal;
}
void setVin() {
string vinVal = number[(rand() * 10)];
for (int i = 0; i < 5; i++) {
int index = rand() * 26;
vinVal = vinVal + upperCase[index]
}
}
void setYear() {
this.year = (rand() * 68) + 1950;
}

public:
Car() {
this.setYear();
this.setPrice();
this.setVin();
this.setOwner();
this.setColor();
}
string getOwner() {
return this.owner;
}
string getColor() {
return this.color;
}
string getVin() {
return this.vin;
}
int getYear() {
return this.year;
}
int getPrice() {
return this.price;
}

};

class BagDyn

{

public:

BagDyn(); // construction

bool Add(int n); // Add, true if successfully added

bool Remove(int n); // Removes an item from the bag

unsigned int getCapacity(); // return the capacity, the max number of items to be held

unsigned int getSize(); // current number of items in the bag

bool Search(int s); // search for an item

bool isEmtpy(); // Checks if the bag is empty

void ListAll(); // displays all items of the bag

private:

CarNode * head = NULL;

unsigned int size;

unsigned int capacity;
};

BagDyn::BagDyn() // construction

{

cout << "Enter the capacity of the bag:";

cin >> capacity;

size = 0;

// data = new Car[capacity];

// if (data == NULL)

// {

// cout << "An error occured, bag cannot be allocated" << endl;

// }

// else

// {

// cout << data;

// cout << "A bag to keep " << capacity << " items is created and ready to use" << endl;

}

}

// returns the capacity, the max number of items to be held

unsigned int BagDyn::getCapacity()

{

return capacity;

}

// number of items in the bag

unsigned int BagDyn::getSize()

{

return size;

}

// search for an item

bool BagDyn::searchByVin(string vin) {
CarNode * temp = this.head;
while (temp != NULL) {
if (temp.carObject.getVin() == vin) {
return true;
}
}
return false
}
void BagDyn::listVinByColor(string color) {
CarNode * temp = this.head;
while (temp != NULL) {
if (temp.carObject.getColor() == color) {
cout << temp.carObject.getVin() << endl;
}
}

}

void BagDyn::listVinByOwner(string owner) {
CarNode * temp = this.head;
while (temp != NULL) {
if (temp.carObject.getOwner() == owner) {
cout << temp.carObject.getVin() << endl;
}
}
}

// Checks if the bag is empty

bool BagDyn::isEmtpy()

{

if (size == 0) return true;

return false;

}

// Adds an items, true if successfully added

bool BagDyn::Add(CarNode node)

{

if (size == capacity) return false;

CarNode * temp = this.head;
while (temp != NULL) {
if (temp.carObject.getVin() == node.carObject.getVin()) {
return false;
}
temp = temp - > nextCar;
}

CarNode * newNode = new CarNode();
newNode.carObject = new Car();
newNode.nextCar = NULL;
size++;

}

// data[size] = n; size++;

// displays all items of the bag

void BagDyn::ListAll()

{
CarNode * temp = this.head;
if (size == 0) {
cout << "Bag is empty" << endl;
return;
}

while (temp != NULL) // i < size or i <= (size-1)

{

cout << "Owner Name: " << temp.carObject.getOwner() << endl;
cout << "Car Color: " << temp.carObject.getColor() << endl;
cout << "Vin: " << temp.carObject.getVin() << endl;
cout << "Price: " << temp.carObject.getPrice() << endl;
cout << "Year: " << temp.carObject.getYear() << endl;

cout << endl << endl;
temp = temp - > nextCar;

}

cout << endl;

}

// Remove car by by Vin

bool BagDyn::removeCarByVin(string vinVal) {
CarNode * temp = this.head;
while (temp != NULL) {
CarnNode * prev = temp;
if (temp.carObject.getVin() == vinVal) {
prev - > nextCar = temp - > nextCar;
temp.nextCar = NULL;
CarNode * junkNode = temp;
free(junkNode);
size--;
return true;
}
}
return false;
}

bool BagDyn::removeLastCar(string vinVal) {
CarNode * temp = this.head;
CarNode * prev = NULL;
while (temp) {
prev = temp;
temp = temp - > nextCar;
}
if (prev != NULL) {
prev - > nextCar = NULL;
free(temp);
size--;
return true;
}
return false;
}

void BagDyn::removeAllCars() {
CarNode * temp = this.head;
CarNode * next;
while (temp != NULL) {
next = current - > next;
current - > next = NULL;
free(current);
current = next;
}
head = null;

}

// Demonstrate the usage of the bag

int main()

{

BagDyn aBag = new BagDyn();
// Create your bag here.

system("pause");

}

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