11-14-2007
Quote:
Originally Posted by
haze21
#!/bin/csh
# This program will add integers
#
#
# add integer1 ..
#
# Check for argument
if ($#argv == 0 ) then
echo "usage: add integers"
exit 1
else
set input = $argv[*]
endif
#
set sum = 0
foreach var ( $input )
@sum = $sum + $input
end
#
echo "The sum total of the integers is $sum"
#
exit 0
#
Hi I am trying to make a program that adds all integers that are input.
ex. add 2 sum = 2
add 2 4 10 sum = 16
This is what i have for code but i keep getting the error "add: syntax error at line 18: `(' unexpected". If anyone could help me fix it i would appreciate it.
I would like to say that I came across same problem in SH script yesterday only .
https://www.unix.com/shell-programmin...ote-array.html
#!/bin/csh -f
echo 'enter a line'
set userline = $<
echo $userline
set sum = 0
foreach var ( $userline )
@sum += $var
end
echo "The sum total of the integers is $sum "
suppose you enter 3 4 5
it will give you 12
I am not sure !! is it helpful for you or not?
Quote:
Originally Posted by
haze21
What am I doing wrong with this foreach loop?
foreach var ($argv)
@sum = $sum + $var
As a rule in csh script
Integer calculations can be performed by C shell, using C language-type operators. To assign a calculated value, the @ command is used.
So, here we are trying to calculate . so we need "@" command instead of "$"
User_prady
Last edited by user_prady; 11-16-2007 at 12:52 AM..
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sum(n) Cyclic Redundancy Checks sum(n)
__________________________________________________________________________________________________________________________________________________
NAME
sum - Calculate a sum(1) compatible checksum
SYNOPSIS
package require Tcl 8.2
package require sum ?1.1.0?
::crc::sum ?-bsd | -sysv? ?-format fmt? ?-chunksize size? [ -filename file | -channel chan | string ]
_________________________________________________________________
DESCRIPTION
This package provides a Tcl-only implementation of the sum(1) command which calculates a 16 bit checksum value from the input data. The
BSD sum algorithm is used by default but the SysV algorithm is also available.
COMMANDS
::crc::sum ?-bsd | -sysv? ?-format fmt? ?-chunksize size? [ -filename file | -channel chan | string ]
The command takes string data or a file name or a channel and returns a checksum value calculated using the sum(1) algorithm. The
result is formatted using the format(n) specifier provided or as an unsigned integer (%u) by default.
OPTIONS
-sysv The SysV algorithm is fairly naive. The byte values are summed and any overflow is discarded. The lowest 16 bits are returned as the
checksum. Input with the same content but different ordering will give the same result.
-bsd This algorithm is similar to the SysV version but includes a bit rotation step which provides a dependency on the order of the data
values.
-filename name
Return a checksum for the file contents instead of for parameter data.
-channel chan
Return a checksum for the contents of the specified channel. The channel must be open for reading and should be configured for
binary translation. The channel will no be closed on completion.
-chunksize size
Set the block size used when reading data from either files or channels. This value defaults to 4096.
-format string
Return the checksum using an alternative format template.
EXAMPLES
% crc::sum "Hello, World!"
37287
% crc::sum -format 0x%X "Hello, World!"
0x91A7
% crc::sum -file sum.tcl
13392
AUTHORS
Pat Thoyts
BUGS, IDEAS, FEEDBACK
This document, and the package it describes, will undoubtedly contain bugs and other problems. Please report such in the category crc of
the Tcllib SF Trackers [http://sourceforge.net/tracker/?group_id=12883]. Please also report any ideas for enhancements you may have for
either package and/or documentation.
SEE ALSO
cksum(n), crc32(n), sum(1)
KEYWORDS
checksum, cksum, crc, crc32, cyclic redundancy check, data integrity, security, sum
CATEGORY
Hashes, checksums, and encryption
COPYRIGHT
Copyright (c) 2002, Pat Thoyts <patthoyts@users.sourceforge.net>
crc 1.1.0 sum(n)