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Full Discussion: recursion script problem
Top Forums Shell Programming and Scripting recursion script problem Post 302336049 by mac4rfree on Tuesday 21st of July 2009 05:30:18 AM
Old 07-21-2009
recursion script problem

Hi Guys,,

I tried to create a recursive function in unix.
The following is the code.

Code:
#/bin/sh

function(){
n=$1;

if [ $n -eq "0" ]; then

out=1;
echo "inside if for 0";

else
out = `$n * function "$n-1"`;
echo "inside if for $n-1;
fi

echo out;
}

input=$1;
echo "$input";
function "$input";

But it is giving an error.This is the error "function()recurs.ksh[3]: 0403-057 Syntax error at line 3 : `(' is not expected."

Can you please help me in debugging it.

Thanks for ur help in advance,,
Regards,
Magesh.

Last edited by vgersh99; 07-21-2009 at 08:13 AM.. Reason: code tags, PLEASE!
 

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echo(3XCURSES)						  X/Open Curses Library Functions					    echo(3XCURSES)

NAME
echo, noecho - enable/disable terminal echo SYNOPSIS
cc [ flag... ] file... -I /usr/xpg4/include -L /usr/xpg4/lib -R /usr/xpg4/lib -lcurses [ library... ] c89 [ flag... ] file... -lcurses [ library... ] #include <curses.h> int echo(void); int noecho(void); DESCRIPTION
The echo() function enables Echo mode for the current screen. The noecho() function disables Echo mode for the current screen. Initially, curses software echo mode is enabled and hardware echo mode of the tty driver is disabled. The echo() and noecho() functions control soft- ware echo only. Hardware echo must remain disabled for the duration of the application, else the behavior is undefined. RETURN VALUES
Upon successful completion, these functions return OK. Otherwise, they return ERR. ERRORS
No errors are defined. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ |MT-Level |Unsafe | +-----------------------------+-----------------------------+ SEE ALSO
getch(3XCURSES), getstr(3XCURSES), initscr(3XCURSES), libcurses(3XCURSES), scanw(3XCURSES), attributes(5), standards(5) SunOS 5.11 5 Jun 2002 echo(3XCURSES)
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