The Objective

The purpose of this assignment is to give you more practice with file I/O, new string handling functions and once again the opportunity to design the entire project. This project also requires you to become familiar with the basic Linked-List operations of Insert, Find and Delete.

The Background

The concepts inherent in linked-list manipulation, especially handling structures with self-referencing pointers are fundamental to many Abstract Data Structures you will encounter in computer science. This project gives you your first chance to experience the joys, trials and tribulations of such data structures.

The Task

This project requires you to maintain information about imaginary major league baseball teams and players. Team and player information will be provided in a text file of commands. You will create teams, add players to teams, remove players from teams, trade players between teams and print team rosters.

Command File Specification

Command File Details

1. Each command in the file and its parameters are on a separate line, terminated by the newline character
2. All command parameters are separated with a comma
3. The following command formats are found in the file
   • TEAM,team_name,owner's_name,manager's_name
   • ROSTER,team_name
   • TRADE,team1_name,player1_id,team2_name,player2_id
   • REMOVE,team_name,player_id
   • ADD,team_name,player_name,player_id,salary,position_number,batting_average

1. The TEAM command defines a new team. There will be no more than 4 teams defined.
2. The ROSTER command prints the team information including data on all players on the team
3. The TRADE command causes player1 and player2 to switch teams
4. The REMOVE command removes the player from the team
5. The ADD command adds a player to a team.
6. player id is the player's Major League Baseball ID and is a unique number.
7. position number is the standard number used for official scoring in Major League Baseball as defined below:
   1. Pitcher
   2. Catcher
   3. First base
   4. Second Base
   5. Third base
   6. Shortstop
   7. Left Field
   8. Center Field
   9. Right Field
8. salary is in dollars
9. batting average is between 0.000 and 1.000, with 3 decimal places

Program Requirements

1. Your progam must support all of the commands described above.
2. Each command must output an appropriate message when executed
3. You must use the following structure definitons typedef struct player { int MLBId; /* Major League BB ID (unique player id) */ char name [50]; /* first, last and moniker */ double battingAve; /* 3 decimal places */ long salary; /* dollars */ int position; /* see above */ } PLAYER; typedef struct node { PLAYER player; /* struct in a struct */ struct node *next; /* self referencing pointer */ } NODE; typedef struct team { char name [20]; /* team name */ char owner [25]; /* owner's name */ char manager [25]; /* manager's name */ NODE *players; /* list of players */ } TEAM;
4. Your program must use command line arguments to input the name of the command file.
5. Your project must use separate compilation. The main file must be named proj5.c. Other source files (.c) and header files (.h) may be named as you feel appropriate.
6. Your program should contain an array of TEAM structures, each of which contains PLAYER information sorted by MLBId and stored in a linked-list of NODEs

Program Hints

• investigate the string library function strtok() which is used to separate tokens in a string. strtok() requires string.h
• investigate the functions atoi(), atol() and atof() for converting strings of digits to integer, long and float, respectively.
• Develop your program incrementally. Start with TEAM, then ADD, then ROSTER. Then try REMOVE and TRADE.

Sample Run

Submitting the Program

To submit your program, type the following command at the Unix prompt

submit cs201 proj5 proj5.c

To verify that your project was submitted, you can execute the following command at the Unix prompt. It will show all files that you submitted in a format similar to the Unix 'ls' command.

submitls cs201 proj5

Wednesday, 28-Apr-1999 11:45:26 EDT