dice cricket

General Certificate of Education

Advanced Subsidiary Examination

June 2011

Computing COMP1/PM

Unit 1 Problem Solving, Programming, Data Representation

and Practical Exercise

Preliminary Material

To be given to candidates on or after Tuesday 1 March 2011, subject to the instructions

given in the

Teachers' Notes (COMP1/TN).

Information



This Preliminary Material comprises

–

Instructions to Candidates

–

a Data File.



Preliminary Material.

A Skeleton Program is provided separately by your teacher and must be read in conjunction with this



Program before the examination.

Candidates are advised to familiarise themselves with the Preliminary Material and Skeleton



be given access to the Skeleton Program electronically at the start of the examination. You must

This Preliminary Material will be made available to you again in the examination. You will also

not

examination room.

take any copy of the Preliminary Material, Skeleton Program or any other material into the

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COMP1/PM

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Instructions for Candidates

The question paper is divided into four sections and a recommendation is given to candidates as to

how long to spend on each section. Below are the recommended timings for the 2011 examination.

Section A

You are advised to spend no more than

Questions will examine the specification content

30 minutes on this section.not specific to the Preliminary Material.

Section B

You are advised to spend no more than

You will be asked to create a new program

Program

20 minutes on this section.not related to the Preliminary Material or Skeleton.

Section C

You are advised to spend no more than

Questions will refer to the

programming.

20 minutes on this section.Preliminary Material and the Skeleton Program, but will not require

Section D

You are advised to spend no more than

Questions will use the the

50 minutes on this section.Skeleton Program and the Preliminary Material and may require the

HiScores.txt Data File

.

Electronic Answer Document

Answers to questions for all four sections must be entered into the word processed document made

available to you at the start of the examination and referred to in the question paper rubrics as the

Electronic Answer Document

.

Preparation for the Examination

You should ensure that you are familiar with this

For the Skeleton Program for your programming language, you should be familiar with:

Preliminary Material and the Skeleton Program.



types

the built-in functions available for manipulating string data and converting strings to other data



file handling commands for CSV (Comma Separated Variable) files



declaring and using arrays.

Turn over



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Dice Cricket Game

The

simple game based on the sport of cricket.

When playing Dice Cricket, players use two special dice called the Bowl Die

The Bowl Die is a 6-sided die where, instead of the numbers 1 to 6, the sides have "0", "1", "2", "4",

"6", and "OUT" written on them. The player whose turn it is rolls the Bowl Die. If the result is one

of the numeric values then this is added to their score (the number of

continue to roll the Bowl Die until "OUT" is rolled. If the result is "OUT" then they roll the Appeal Die

to see what happens next.

The Appeal Die is a 4-sided die where the numbers 1 to 4 have been replaced with different values.

The values on the Appeal Die are "NOT OUT", "CAUGHT", "LBW" and "BOWLED". If when a

player rolls the Appeal Die they get a result of "NOT OUT" then their turn continues and they can

roll the Bowl Die again. Any other result on the Appeal Die means that they are out and their turn

finishes. When player one's turn is over player two has their turn. When player two is out the two

players' scores are compared and the winner is the one with the highest score.

In the

used then the two players have actually got a Bowl Die and an Appeal Die and enter the values they

roll into the program. If virtual dice are used then the program simulates the rolling of the Bowl Die

and Appeal Die by generating random numbers. There are 6 different values on the Bowl Die and 4

different values on the Appeal Die.

The

players playing Dice Cricket. After each game the scores of the two players are compared with the

previous top scores. The winner's details, if their score is higher, will replace those of the player

with the lowest top score. The loser's details, if their score is high enough, could also replace one of

the previous player’s details. If the winning player’s score is the same as the lowest top score their

details are not stored. If a game is drawn with a score lower than three of the top four scores then

only player one’s details will be stored.

In the

Skeleton Program is a program for the two-player game of Dice Cricket. Dice Cricket is a1 and the Appeal Die.runs they have got) and theySkeleton Program players can choose to play with real dice or virtual dice. If real dice areSkeleton Program also stores the names and scores of the four highest results obtained bySkeleton Program there is a menu containing five options:

 

Play game version with virtual dice

 

Play game version with real dice

 

Load top scores

 

Display top scores



If the user chooses to load top scores from a file then the file

contents placed in the array

QuitHiScores.txt is opened and theTopScores.

The Data File

Ricky,12

Sachin,45

Brian,2

Monty,1

The data file

HiScores.txt will be available to you at the start of the examination.

1

Dice is the plural of the word die.

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Variables

Some of the variables used are:

Identifier Data Type Purpose

TopScores Array[1..4]

of Record

This is an array of records. Each

record stores the details about one of

the top four scores. A record consists

of a

name (string data type) and a

score

(integer data type)

PlayerOut Boolean

not

Used to indicate if a player is out or

CurrentPlayerScore Integer

the current player has accumulated

Used to store the number of runs that

PlayerNo Integer

player two's turn

Used to indicate if it is player one's or

Notes

The programming language used to code the game will determine the letter case for each identifier

and so may not match exactly the identifiers shown in the table above.

Your chosen programming language may use arrays with a lower bound value of 0. If so, position 0

will not have been used.