Answer / sujay kumar

First method:

function function_name
{
}

Second Method:

function_name()
{
}

For both methods, the invocation of function would be in
the same format only.

Invocation:

function_name

Answer / prakash

function Dissplay () {

echo "This is how we define function"

}


Display # Invoking Function

## Function should be defined before we invoke it

Answer / nandish

we can pass the parameter also
ex: function fun_name () {

# write block here
}
invoke function as

fun_name parameter1 parameter2 ...

Answer / pitambar mishra

### Note : Function always returns a value.
### This script is for adding two numbers.
### Script name : add.ksh

#!/bin/ksh

sum() ### Defining sum function
{
echo enter 2 no :
read num1 num2
echo sum=$(( num1 + num2 ))
}
sum ### Invoking sum function

To execute it :
ksh add.ksh

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