Draughts Essay, Research Paper

Program construction

The completed programs to be submitted to the charon system by the date indicated.

C++ Familiarisation

You should expect to finish this work by the end of week 3 (Now week 4 due to non availability of the Borland C++ compiler in the labs) at the latest. The completed programs to be submitted to the charon system by this date.

A non extendable extension for this work is granted till the end of week 4 (Now week 5). However, for your own personal satisfaction the charon system will still judge your work after this date.

Exercise 1.1

Hello world

A program to write out the greeting message “hello world” to the terminal.

Input Expected output

Hello world

Key points

A first C++ program

Using C++ Builder

Exercise 1.2

Times Table

A program to print out the 5 times table.

Input Expected output

1 * 5 = 5

2 * 5 = 10

3 * 5 = 15

4 * 5 = 20

5 * 5 = 25

6 * 5 = 30

7 * 5 = 35

8 * 5 = 40

9 * 5 = 45

10 * 5 = 50

11 * 5 = 55

12 * 5 = 60

Key points

Using loops

Output of numbers and text

Exercise 1.3

Times Table the general case

A program to print out any times table. The input to this program is an integer number specifying which time table is to be printed.

Hint:

int num; std::cin >> num;

would read a decimal number into the variable num.

Input Expected output

2 1 * 2 = 2

2 * 2 = 4

3 * 2 = 6

4 * 2 = 8

5 * 2 = 10

6 * 2 = 12

7 * 2 = 14

8 * 2 = 16

9 * 2 = 18

10 * 2 = 20

11 * 2 = 22

12 * 2 = 24

Key points

Using loops

Output of numbers and text

Input of numbers in C++

Exercise 1.4

Order

A program to read in three integer numbers and print them out in ascending order. For example, if the numbers input were 10 7 8 then your output would be:

7 8 10

Input Expected output

10 7 8 7 8 10

Key points

Selection constructs

Input/output of numbers in C++

To gain familiarity with nested selection statements.

Exercise 1.5

Calculator

A program to implement a desk calculator that has no operator precedence. For example, if the formula 2 + 3 * 4; where input the result would be 20. Likewise if the formula 4 + 3 * 2; where input the result would be 14.

Input Expected output

2 + 3 * 4; Answer = 20

3 + 4 * 2 + 1; Answer = 15

To gain familiarity with loops and selection statements.

Hint: A syntax diagram for the expression is shown below:

+———+ +——+

—————-| Number |————-| ; |—

/ +———+ \ +——+

| |

| +———+ |

\——| + – * / |——/

+———+

This shows that a valid expression is a number followed by either a ‘;’ or the operator ‘+’, ‘-’, ‘*’, ‘/’. If an operator is found then the next item expected is a number. If the next item found is a ‘;’ then the expression is finished.

Key points

Revision of loops and selection constructs in C++

Input of characters and numbers

Syntax diagrams

Building a class

Exercise 2.1

You should expect to finish this work by the end of week 6 (Now week 7) at the latest. The completed programs to be submitted to the charon system by this date.

A non extendable extension for this work is granted till the end of week 7 (Now week 8). However, for your own personal satisfaction the charon system will still judge your work after this date.

The exercise is to create the class Employee_pay that can be used as part of a larger program to manage the pay of employees in a SME (Small to Medium Enterprise). The responsibilities of the class Employee_Pay are as follows:

Method Responsibility

set_hourly_rate Sets the hourly rate.

add_hours_worked Accumulates the number of hours worked so far.

pay Delivers the pay for this week. Tax is deducted at 20% of the total pay.

reset Resets the hours worked back to zero.

hours_worked Delivers the number of hours worked so far this week.

pay_rate Delivers the hourly pay rate.

The partial C++ specification of this class is shown below:

class Employee_Pay

{

public:

Employee_Pay();

void add_hours_worked( int number_of_hours_worked );

void set_hourly_rate( float hourly_pay_rate );

void reset();

float pay();

int hours_worked();

float pay_rate();

private:

};

You may wish to use the following test program to help test the class that you have created.

#include

#include

void main()

{

std::cout