bash shell script fibonacci not showing value 2 after 0 1 1?

Question

I am writing a bash script for fibonacci which is not printing the value after 0 1 1 . It is not printing \"2\" after 0 1 1. The code is given below.

echo \"ent         


        

Answer 1

echo "enter the number"
read n
a=0
b=1
c=0
while [ $b -le $n ]
do
  c=`expr $a + $b`
  echo $c ' = ' $a ' + '  $b
  a=$b
  b=$c
done