value inside a function

Shell Programming and Scripting
1

i have a script like this

#!/bin/ksh

initialize()
{
x=20
}

...
...
...

x=10
initialize;
echo $x

when i try to echo the value of x it should return only 10 and not 20
how to achieve the same

can any one help

thanks in advance

2

Declare x as local using the local keyword inside the function to prevent it from modifying the global variable.

local x=20
3

A variable declared as local is one that is visible only within the block of code in which it appears. It has local "scope." In a function, a local variable has meaning only within that function block.

  • nilesh