Write $C++$ Program to check whether a number is prime number or not. $($A prime number is only

divisible by $1$ and itself without leaving a remainder$)$

Write $C++$ program to find sum of series $1^{{?}^{?}}2+3^{{?}^{?}}2+5^{{?}^{?}}2+$dots..$+n^{{?}^{{?}^{?}}}2.$

Write $C++$ Program to do arithmetic operations according to user choice using switch case.

Write $C++$ program to calculate area of a circle, a rectangle or a triangle depending upon user's

choice.

Rewrite the following loops as for loops.

a$.$ int $i=1$;

while $(i10)$

$\{$

if i $2$

cout $<mtext\; id="EditorElement\_24894"></mtext><mi\; id="EditorElement\_24895">\text{'}</mi>$X$\text{'}$;

i$++$;

$\}$

b$.$ int $i=1$;

while $(i10)$

$152$ Chapter $3/$ More Flow of Control

$\{$

cout $<mtext\; id="EditorElement\_24791"></mtext><mi\; id="EditorElement\_24792">\text{'}</mi><mtext\; id="EditorElement\_24793"></mtext><mi\; id="EditorElement\_24785">x</mi><mtext\; id="EditorElement\_24778"></mtext><mi\; id="EditorElement\_24779">\text{'}</mi>$;

$i=i+3$;

$\}$

c$.$ long $m=100$;

do

$\{$

cout $<mtext\; id="EditorElement\_24692"></mtext><mi\; id="EditorElement\_24693">\text{'}</mi><mtext\; id="EditorElement\_24694"></mtext><mi\; id="EditorElement\_24695">\text{'}</mi>$X$\text{'}$;

$m=m+100$;

$\}$ while $(m<mn\; id="EditorElement\_24638">1</mn><mn\; id="EditorElement\_24639">0</mn><mn\; id="EditorElement\_24640">0</mn><mn\; id="EditorElement\_24641">0</mn><mi\; id="EditorElement\_24643">)</mi>$;