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.

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

$4|$

$3.$ 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 loop, the total

menu should be refreshed so that the user can re$-$enter the correct value.

$6.$ Once the correct value has been entered, this function will return the user

selection to the main$()$ function.

Function Therm$\_$Expansion$()($this section deals with what is contained in function

Therm$\_$expansion$())$

$1.$ The task of this function is to do all the calculations relating to the thermal

expansion and temperature conversion from Celsius to Fahrenheit.

$2.$ All the variable names used in the main$()$ function must be used in this function.

Additional variables that must be used are: Co$\_$Factor, TempF, Expand.

$3.$ Since this function is going to be used for either Steel$/$Concrete or Aluminium as

a construction material, a decision must be taken as to which constant

coefficient should be used for the calculation.

$4.$ The calculations can then be performed, and the display function can be called

to display the answers.

$5.$ No input or output statement can be used in this function.

Function Display$\_$Ans$()($This section deals only with what is contained in function

Display$\_$Ans$())$

$1.$ The only task of this function is to display the results of the calculations. See

screenshots.

$2.$ Only the appropriate variable names used in the other functions must be used in

this function.

$3.$ No heading or sub$-$heading can be printed in this function. The heading and subheadings must be displayed in the appropriate locations in the main$()$ function.

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

function.

It is recommended that you first develop the functions above to produce a single set of

calculations before you attempt to implement the second option of the table

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

$5|$

generation. Plan these functions using a flowchart so that you get the calculations and

display operation in the right order. Once the single calculation works properly, then

develop the function below. Test changes made to your program regularly and fix any

syntax errors that may creep into the program.

Function Thermal$\_$TableGen$()($This section deals only with what is contained in

function Therm$\_$TableGen$())$

$1.$ The only task of this function is to generate an Expansion Table: Option $2$ in the

menu$()$ function.

$2.$ Only the appropriate variable should be received by this function. An additional

variable must be introduced called Temp.

$3.$ The minimum temperature of $-10\backslash$deg C should be set.

$4.$ A while loop should be used to generate the Expansion Table. The appropriate

function must be called to perform the calculations.

$5.$ The temperature should be increased by increments of $10\backslash$deg C until th