Shell Programming and Scripting

a=10.00
pattern=-11.00
b=`echo "$a $pattern" | awk ' printf("%d\n", $1 + $2)'`
echo $b

 echo "$a $pattern" | awk '{a=$1+$2; print a}'

$ echo "10.00 -11.00" | awk ' {printf("%d\n", $1 + $2)}'
-1

a=10.11
pattern=-11.01
b=`echo "$a $pattern" | awk  {' printf("%d\n", $1 + $2)'}`
echo $b

/user/ahamed/login $ echo "10.11 -11.00" | awk '{a=$1+$2; print a}'
-0.89

/user/ahamed/login $ echo "10.11 -11.00" | nawk '{ printf("%f\n", $1 + $2)}'
-0.890000

/user/ahamed/login $ echo "10.11 -11.00" | nawk '{ printf("%0.2f\n", $1 + $2)}'
-0.89