Homework & Coursework Questions

 
echo "enter a number "
read n
i=0
first=0
second=1
result=0
prime="true"
echo –n " $first $second "
while [ $i –lt $n ]
do
result=`expr $first + $second`
first=$second
second=$result
i=$result
for (( x=$i –lt ; x >=2; x--))
do
if [ `expr $i % $x` -eq 0 ]
then
prime="false"
break
else
prime="true"
if [ $prime="true" ]
then
echo $i
if=`expr $i + 1`
done

echo "enter a number "
read n
z=0
a=0
fib=0
b=1
echo " fibancci series is "
while [ $z -le $n ]
do
fib=`expr $a + $b`
a=$b
b=$fib
x="true"
m=$fib
for((y=$m-1;y>=2;y--))
do
if [ `expr $m % $y` -eq 0 ]
then
x="false"
break
else
x="true"
fi
done
if [ $x ="true" ]
then
echo "$m"
fi
z=`expr $z + 1`
done

set -x