Shell Script to add two numbers by the use of Function

Q. How do I write Bash Script to add two numbers using function

Ans:

#!/bin/bash
#function to add two numbers
add()
{
x=$1
y=$2
echo -e "Number entered by u are: $x and $y"
echo "sum of $1 and $2 is `expr $x + $y` "
}
# main script
echo "enter first number"
read first
echo "enter second number"
read sec
#calling function
add $first $sec
echo "end of the script"

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Shell Script to Display numbers Using Array

Q. How to use array in Bash for taking input and displaying it

Ans:

#!/bin/bash
for((i=0;i<5;i++))
do
echo "enter `expr $i + 1` number"
read arr[$i]
done
echo "the numbers you hav entered are"
for((i=0;i<5;i++))
do
echo ${arr[$i]}
done

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