Accessing a variable from another script

Hi,
Can anyone assist me on how to access a variable in a shell script from another script.

for ex,

Script-1
-------

#! /bin/sh

c=10

Where as, i would like to access the velue of variable c in another script 'Script-2'.

Thankyou to all in advance !!

 
export 

A little more than that, panyam,

export c
script2

Or you can do:

script2 $c

and in script2, c appears as $1