As a Software Developer, you are tasked by an international construction company expansion Calculator program. When a bridge or overhead walkway is constructed, the

Engineer must consider that the material used in the construction will expand or

contract in response to temperature variations. Failure to take the material

expansion$/$contraction into account could potentially lead to severe damage to these

structures, and endanger the safety of the public.

To solve this problem, the engineer needs to determine by how much the length of the

structure will change, and build in a safety factor. The total length of the bridge must be

taken into consideration when determining the expansion length, then allowance

should be made for this movement by including expansion joints $($gaps$)$ over the total

length of the bridge.

Since different construction materials expand $($and contract$)$ at different rates to a

temperature change, a linear expansion coefficient is introduced which has been

determined for various materials. Steel and concrete have the same coefficient

$($CTE$\_$CS$),$ which is

$1$

$.$

$2$

$$

$10$

$$

$5$

$,$ and aluminium has a coefficient $($CTE$\_$A$)$ of

$.$ The

coefficient values are constant. The constant identifier names are shown above in

parentheses.

$2$

$.$

$4$

$$

$10$

$$

$5$

This multi$-$function program must give the user the opportunity to select the desired

calculation via a menu. This menu will allow the user to select either a single calculation

or generate an expansion table. Once the user has selected their option, the program

will test for a valid user input. If the input is valid, then it will ask the user to enter

certain parameters and the material used before proceeding to the next stage of the

program. Should the user$$s input be invalid, the program will not ask the user to enter

these parameters and will proceed to the next stage. The next stage determines what

further action should be taken based on the user$$s initial selection.

Careful attention should be taken in designing this program according to the specified

structure. It is strongly advised that this program be developed in stages. After each

section is completed, the program must be tested. Do not continue development of the

program if a particular section does not work. If the program cannot compile and

execute successfully, it will incur severe loss of marks.

At all times, adhere to the specifications, as marks are allocated accordingly.

$2|$

SFD$261$S $-2024-$ GA$-$Assessment $($GA$9)$

Program Specification

A Title Block must be created and appear above the source code of your program. The

title block must contain the following: Name, Surname, Student Number, and Date.

Specifications for Functions:

Function main$()($this section deals with all the requirements for function main$())$

$1.$ The only variables allowed in this function are: TempC, T$\_$Length, M$\_$Opt, Sel.

Choose your variable data types carefully.

$2.$ The menu$()$ function should be called to allow the user to select the appropriate

calculation.

$3.$ Once the selection has been returned, a test must be conducted to determine if

the user terminated the program. If not, the user must enter the values of the

total length of the construction and the maximum temperature $(\backslash$deg C$)$ to be

considered in the design. See screenshot $($Figure $1).$

$4.$ The user will now be presented with a list of available construction materials

that could be used, from which the user will be requested to select. See

screenshot $($Figure $2).$

$5.$ A test should then be performed to ensure that if the material is not available

from the list and the user did not select X in the menu$()$ function, then the

variable Sel should be set to the character value of E$.$

$6.$ A switch$()$ statement will then be used to determine what further action should

be taken based on the user$$s initial input from the menu$()$ function. Should the

user have terminated the program in the menu$()$ function $($X$),$ then the message:

User terminated program, should be displayed. The default message should

display: User termination $$ Material not listed. The switch statement does not

test for the E character, so this becomes the default option.

$7.$ No calculations or answers should be printed in this function.

Function menu$()($this section deals only with what is contained in function menu$())$

$1.$ This function displays the options available to the user as per the screenshot

$($Figure $1).$ The layout in the screenshot forms part of the specification.

$2.$ An unformatted input accepts the user$$s selection into the only variable allowed

in this function, which is Sel.

$3|$

SFD$261$S $-2024-$ GA$-$Assessment $($GA$9)$

$3.$ A test should be performed to ensure that should the user enter an invalid input,

they will be warned with a message: Invalid option selected! For one second.

See screenshot $($Figure $6).$

$4.$ No other inputs, calculations or function calls are allowed in this function.

$5.$ Once you have tested this menu$()$ function using a do$/$while lo