COSC 143

7

Programming Assignment

2

Programming Assignment

2

You will write a program that reads a binary file that contains records of creatures. Each record can be

stored in a Creature struct. You should present the user with a menu of three options: display a specific

creature, display

all the creatures sorted by name, or quit. If the user chooses to display a specific

creature, you should ask the user which creature to display.

You will be supplied with a starter file PA

2

_

Starter

.cpp. You will need to complete some of the code in

main a

nd write the definitions for the three functions. For sorting, you should use the sort function

found in the algorithm header file. You can read more about this function here:

http://www.cplusplus

.com/articles/NhA0RXSz/

.

Make sure you use good programming style.

Name your file PA

2

_lastName_firstName.cpp, replacing lastName with your actual last name and

firstName with your actual first name.

Submit only the cpp file.

A possible sample run will look

as follows:

Menu

1. Display a specific creature

2. Display all creatures sorted by name

3. Quit

Enter your choice (1, 2, 3):

1

Which creature do you want to view?

Enter 1 to 10:

3

Creature Report

Name: Kobold

Type: Small Humanoid

HP: 4

Armor Class: 15

S

peed: 6

Press any key to continue . . .

COSC 143

7

Programming Assignment

2

Menu

1. Display a specific creature

2. Display all creatures sorted by name

3. Quit

Enter your choice (1, 2, 3):

1

Which creature do you want to view?

Enter 1 to 10:

8

Creature Report

Name: Frost Worm

Type: Huge

Magical Beast

HP: 147

Armor Class: 18

Speed: 6

Press any key to continue . . .

Menu

1. Display a specific creature

2. Display all creatures sorted by name

3. Quit

Enter your choice (1, 2, 3):

1

Which creature do you want to view?

Enter 1 to 10:

15

Inva

lid entry. Try again.

Which creature do you want to view?

Enter 1 to 10:

2

Creature Report

Name: Orc

Type: Medium Humanoid

HP: 5

Armor Class: 13

Speed: 6

Press any key to continue . . .

COSC 143

7

Programming Assignment

2

Menu

1. Display a specific creature

2. Display all creatures

sorted by name

3. Quit

Enter your choice (1, 2, 3):

2

Basili

s

k

Medium Magical Beast

45

16

4

Clay Golem

Large Construct

90

22

4

Ethereal Filcher

Medium Abberation

22

17

8

Frost Worm

Huge Magical Beast

147

18

6

Goblin

Small Humanoid

5

15

6

Harpy

Medium

Monstrous Humanoid

31

13

4

COSC 143

7

Programming Assignment

2

Hobgoblin

Medium Humanoid

6

15

6

Kobold

Small Humanoid

4

15

6

Medusa

Medium Monstrous Humanoid

33

15

6

Orc

Medium Humanoid

5

13

6

Press any key to continue . . .

Menu

1. Display a specific creature

2. Display all

creatures sorted by name

3. Quit

Enter your choice (1, 2, 3):

3

Press any key to continue . .

main.cpp file

/****************************** Name Date PA1_Starter.cpp Description ********************************/

// Headers #include #include #include #include #include #include using namespace std;

// Global variables const int CREATURE_NAME_SIZE = 30; // Max length of a creature name const int CREATURE_TYPE_SIZE = 26; // Max length of a creature type const string FILENAME = "creatures.dat"; // Name of file that contains the data

// struct used to create records in file struct Creature { char name[CREATURE_NAME_SIZE]; // Name of the creature char creatureType[CREATURE_TYPE_SIZE]; // Type of creature int hp; // Hit points for creature int armor; // Armor class for creature int speed; // Speed of creature };

// This function returns true if the name of the left creature is less than the name of the right creature // Use this function when running the sort function bool sortByName(const Creature &lhs, const Creature &rhs) { string name1(lhs.name), name2(rhs.name); return name1 < name2; }

// Function declarations // You will need to code the definitions for each of these functions int getCreatureNumber(int numCreatures); void displayCreature(fstream& file, int num); void displaySorted(fstream& file);

int main() { char choice; // choice made by user for menu fstream creatureFile; // file stream for input file int numCreatures; // the number of creatures saved to the file // Open the creatureFile for input and binary (one statement of code)

// Get the number of creatures in the file (two statements of code) // The number of creatures should be assigned to numCreatures

do { cout << "Menu" << endl; cout << "1. Display a specific creature "; cout << "2. Display all creatures sorted by name "; cout << "3. Quit "; cout << "Enter your choice (1, 2, 3): "; cin >> choice;

while (cin.get() != ' ');

switch (choice) { case '1': // Display a specific creature displayCreature(creatureFile, getCreatureNumber(numCreatures)); break;

case '2': // Display all the creatures in order displaySorted(creatureFile); break;

case '3': // Quit break;

default: cout << "Invalid option. "; break; }

if (choice != '3') { system("PAUSE"); system("CLS"); }

} while (choice != '3');

creatureFile.close(); // Make sure we place the end message on a new line cout << endl;

// The following is system dependent. It will only work on Windows system("PAUSE");

/* // A non-system dependent method is below cout << "Press any key to continue"; cin.get(); */ return 0; }

/******************************************************************* getCreatureNumber gets and returns the record number from the file that the user would like to be displayed PARAM: numCreatures should be the value of the total number of records (creatures) in the file PRE: numCreatures contains a value that is equal to the number of records in the file POST: A value between 1 and numCreatures is returned as selected by the user NOTE: Do not allow a value less than 1 or greater than numCreatures to be returned ********************************************************************/ int getCreatureNumber(int numCreatures) {

}

/******************************************************************* displayCreature displays record number num from file PARAM: file is a fstream that should be open for input and binary num contains the record number that is to be read in file PRE: file is a fstream that is open for input and binary num is a value between 1 and the number of records in file POST: The record number num is displayed to the monitor ********************************************************************/ void displayCreature(fstream& file, int num) {

}

/******************************************************************* displaySorted should read file into a vector. It should then sort the vector by the name of the creature. Last it should display the vector PARAM: file is a fstream that should be open for input and binary PRE: file is open for input and binary POST: Each record is displayed sorted by the name of the creature ********************************************************************/ void displaySorted(fstream& file) {

}

creature.dat file

Harpy Medium Monstrous Humanoid Orc Medium Humanoid Ethereal Filcher Medium Abberation Hobgoblin Medium Humanoid Basilik Medium Magical Beast - Frost Worm Huge Magical Beast Clay Golem Large Construct Z Medusa Medium Monstrous Humanoid ! Kobold Small Humanoid Goblin Small Humanoid