stion $1$

Write function headers for the functions described below:

$($i$)$ The function check has two parameters. The first parameter should be an integer number and the

second parameter a floating point number. The function returns no value.

$($ii$)$ The function mult has two floating point numbers as parameters and returns the result of

multiplying them.

$($iii$)$ The function time inputs seconds, minutes and hours and returns them as parameters to its

calling function.

$($iv$)$ The function countChar returns the number of occurrences of a character in a string, both provided as

parameters.

Question $2$

Find the error$($s$)$ in each of the following program segments and explain how the error$($s$)$ can be

corrected:

$($i$)$ int function$1()$

$\{$

cout $<<$ "Inside function function$1"<<$

DUE DATE $13$ May $2024$

UNIQUE NUMBER

EXTENSION There is $5$ days extension for this assignment

TUTORIAL MATTER Study Guide, Lessons $1723$

CONTRIBUTION WEIGHT TO

YEAR MARK

QUESTIONS Practical exercises

$513648$

INP$1501/102/0/2024$

$3$

endl; int function$2()$

$\{$

cout $<<$ "Inside function function$1"<<$ endl;

$\}$

$\}$

$($ii$)$ int sum$($int x$,$ int y$)$

$\{$

int result;

result $=$ x $+$

y;

$\}$

$($iii$)$ int computeProd$($int n$)$

$\{$

if $($n $==0)$

return $0$;

else

$\}$

n $*$ computeProd$($n $1)$;

$($iv$)$ void aFunction$($float a$)$

$\{$

float a;

cout $<<$ a $<<$ endl;

$\}$

$($v$)$ void theProduct$()$

$\{$

int

a;

int

b;

int

c;

int result;

cout $<<$Enter three integers $<<$

endl; cin $>>$ a $>>$ b $>>$ c;

result $=$ a $*$ b $*$ c;

cout $<<$Result is $<<$ result $<<$

endl; return result;

$\}$

INP$1501/102/0/2024$

$($vi$)$ float calculateSquare$($float number$)$

$\{$

return number $*$ number;

$\}$

Question $3$

Write the functions as described below. You need not submit programs that use these functions.

$($i$)$ Write a function that returns the cube of the integer passed to it$.$ For example cube$(2)$ will

return $8$ and

cube$(3)$ will return $27.$

$($ii$)$ Write a void function that receives four int parameters: the first two by value and the last two by

reference. Name the formal parameters n$1,$ n$2,$ sum and diff. The function should calculate the sum of

the two parameters passed by value and then store the result in the first variable passed by reference. It

should calculate the difference between the two parameters passed by value and then store the result in

the second parameter passed by reference. When calculating the difference, subtract the larger value from

the smaller value. Name the function calcSumAndDiff.

$($iii$)$ Write a function void rectangle$($int w$,$ int h$)$ to print an open rectangle of asterisks $(*).$ The

parameters w and h are the width and the height of the rectangle, expressed in number of asterisks.

$($iv$)$ Write a function, computePrice that receives two parameters: the first one is a character variable

indicating the size of the pizza $($S$,$ M or L$)$ and the second an integer variable indicating the number of

toppings on the pizza. It then computes the cost of the pizza and returns the cost as a floating point

number according to the rules:

$$ Small pizza $=$ R$50+$ R$5\mathrm{.}50$ per topping

$$ Medium pizza $=$ R$70+$ R$6\mathrm{.}50$ per topping

$$ Large pizza $=$ R$90+$ R$7\mathrm{.}50$ per topping

Question $4$

The post office needs a program that reads in postal address data and then displays the data in a

neat format.

$$ Declare four string variables name, addr$1,$ addr$2$ and postalCode.

$$ First, the main function of the program must input the data by means of a function called inputData.

$$ Second, the main function calls the function displayData to display the name and address as follows:

Mr R$.$S$.$ Bopape

P$.$O$.$ Box

$50741$

Sandton

$2146$

Submit the program and the output.

Question $5$

Write a program that calculates the average of a group of test scores, where the lowest score

in the group is dropped. For example: if the user enters the values $65,43,78,67$ and $64,$ the output

will be:

INP$1501/102/0/2024$

$5$

After dropping the lowest test score, the test average

is $68\mathrm{.}50$

This average is calculated by dropping the lowest score which is $43$ and dividing the sum of the

remaining four values $65,78,67$ and $64,$ which is $274,$ by $4.$

It should use the following functions:

$$ An int function getScore with no parameters, to ask the user for a single test score, validate it and

return the score. The function should be called by the main function once for each of the five scores to be

entered. Do not accept test scores lower than $0$ or higher than $100.$

$$ An int function findLowest that is passed the five test scores and then finds and returns the lowest

of the five scores passed to it$.$ It is called by function calcAverage, to determine which of the five scores

to drop.

$$ A float function calcAverage that is passed the five test scores and then calculates and returns

the average of the four highest scores.

$$ A void function displayOutput that is passed the average score; it then displays the average of the

test scores. Display two digits after the decimal point.

You must submit the four functions you have developed as well as output using