$($algorithms$,$ C$-$Overview, selection statements$)$

Provide short Answers only for $21$ to $25.$

Rewrite the if statement below using only the relational

operator $$ in all conditions. Assume that the value of score

is between $0$ and $100$ inclusive.

if $($score $90)$

else if $($score $80)$

else

paiatf$("$C

$")$:

What do these statements display?

a$.$ if $(12<mn\; id="EditorElement\_1475484">1</mn><mn\; id="EditorElement\_1475485">2</mn><mi\; id="EditorElement\_1475487">)</mi>$

grintf$("$less$")$:

else

pointft" not less"$)$;

output: not less

b$.$ var$1=2512$:

var$2=\frac{1500\text{;}}{1500}$

if $($var$1$var$2)$

else

p$6$iotft"less or equal"$)$;

briotfte"greater than"$)$;

output: greater than

Write an if statement that might be used to compute and

display the average of a set of $n$ numbers whose sum is stored

in variable total. This average should be found only if $n$ is

greater than $0$; otherwise, an error message should be

displayed.

if $(n>0)$

printf$("$Average: $\frac{d}{?}$

$",($total$/$n$))$;

else

printf$("$Error: $n\frac{0}{?}$

$")$;

Write a C programming expression to test for each of the

following relationships.

a$.$ age is from $18$ to $21$ inclusive.

b$.$ water is less than $1\mathrm{.}5$ and also greater than $0\mathrm{.}1.$

c$.$ year is divisible by $4.($Hint: Use $\frac{2}{a}.)$

d$.$ speed is not greater than $55.$

e$.y$ is greater than $x$ and less than $z.$

f$.w$ is either equal to $6$ or not greater than $3.$

Write C assignment statements for the following:

a$.$ Assign a value of $0$ to between if $n$ is less than $-k$ or

greater than $+k$; otherwise, assign $1.$

b$.$ Assign a value of $1$ to divisor if digit is a divisor of

num; otherwise, assign a value of $0.$

c$.$ Assign a value of $1$ to lowercase if $>$ is a lowercase

letter; otherwise, assign a value of $0.$

Algorithms and Programming:

Assume we want to write an interactive $C$ program that uses

selection statements to compute the area of a square $($area $=$

side $*$ side$)$ or a circle $($area $=$ PI $*$ radius$*$ radius$)$ after

prompting the user to choose the first character of the chosen

figure name $S$ or C$)$ lowercase letters also included. Answer

the following questions:

$6\mathrm{.}1$ What are the input and output variables?

$6\mathrm{.}2$ Draw the corresponding Raptor flowchart to represent this

algorithm $($provide a screenshot only in the same word

document$)$

$6\mathrm{.}3$ Write the complete c program to represent this algorithm

$($copy the source code also in the same word document with

screenshots of the program output$).$

$6\mathrm{.}4$ What gof command$($s$)$ will be used to compile, link, and

execute this program?