Ok. So u just want to input 2 numbers and want to perform all operations user has asked to. This is also simple. U have the count of arguments. Run a for loop and check whether only 2 arguments are numbers. See below.
Code:
count=0
for arg in `echo "$@"`
do
echo "$arg" | egrep "^[+-]*[0-9][0-9]*$"
if [ $? -eq 0 ] ; then
(( $count += 1 ))
else
echo "$arg" | egrep "^[+-][asdm]$"
if [ $? -gt 0 ] ; then ; display_usage ; exit ; fi
fi
if [ $count -gt 2 ] ; then ; display_usage ; exit ; fi
done
This will solve all the problems...
That's a really good idea, the logic definitely solves part of my problem, but for some reason I'm getting errors.
Code:
zak 153 % mymath.sh 7 7 -a
7
mymath.sh: line 52: ((: 0 += 1 : attempted assignment to non-variable (error token is "+= 1 ")
7
mymath.sh: line 52: ((: 0 += 1 : attempted assignment to non-variable (error token is "+= 1 ")
-a
Hey can anyone tell me the korn script code to implement an interactive integer calculator using the shell's built in arithemetic expression evaluation (2 Replies)
I am pretty new to the Unix word, and have created a working calculator script. I have one problem. It doesn't use any decimals, it rounds off to the nearest whole number.
1 #!/bin/ksh
2 while true; do
3 echo -n "Enter the first integer: "; read IN1
4 test... (2 Replies)
hi, im new to the unix system and scripting and was wondering if anyone could help me with this problem iv been havin... i want the system to:
1. ask me for a number
2. ask me for a command to use on that number (* + - /)
3. ask me for another number
4. then ask me for another command, if the... (2 Replies)
Hi Guys,
I found this code in net.. it is working fine..
But can anybody explain me the sed statement used in the code..
echo "Enter the expression:\c"
read express
eval echo "$express"|sed 's/^/'$precision' \
/'|bc -l|\
sed -n '1,${
/syntax/!{
}
... (2 Replies)
so just spit ballin here,
i was wondering if anybody knew how to make a chmod calculator script.
basically go to this website http://mistupid.com/internet/chmod.htm
i would like something like this that i can use in a terminal tho. so like i run the scrip and it ask for owner what... (1 Reply)
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known/data:
Script a simple calculator. In the command line enter the script file
/home/etc/mycalc or /home/etc/mycalc 1 +... (6 Replies)
Using the C Shell, I'm building a script that will compute simple mathematical computations (addition, subtraction, multiplication, division). The user will enter two integers (operands) on the command line separated by the operation (operator) they wish to perform.
Example of the command line... (7 Replies)
Hello, I'm in need with a little help for my script please this is the brief i need to complete which I haven't been able to do:
On option 7 stop the calculator
The calculator will keep running until option 7 is chosen. Any other option than 1-7 will generate an error message.
Pls any help... (1 Reply)
Hello, I have to make a calculator in shell script. But I get this error. Can someone help me please?
c.sh: 3: c.sh: i: not found
That's my code.
==========================================================================
#Calculator
i = "yes"
while
do
echo What operation... (2 Replies)
Discussion started by: KJN
2 Replies
LEARN ABOUT LINUX
stack
struct::stack(n) Tcl Data Structures struct::stack(n)
__________________________________________________________________________________________________________________________________________________NAME
struct::stack - Create and manipulate stack objects
SYNOPSIS
package require Tcl 8.2
package require struct::stack ?1.3.3?
stackName option ?arg arg ...?
stackName clear
stackName destroy
stackName peek ?count?
stackName pop ?count?
stackName push item ?item...?
stackName size
_________________________________________________________________DESCRIPTION
The ::struct namespace contains a commands for processing finite stacks.
It exports a single command, ::struct::stack. All functionality provided here can be reached through a subcommand of this command.
Note: As of version 1.3.3 of this package a critcl based C implementation is available. This implementation however requires Tcl 8.4 to
run.
The ::struct::stack command creates a new stack object with an associated global Tcl command whose name is stackName. This command may be
used to invoke various operations on the stack. It has the following general form:
stackName option ?arg arg ...?
Option and the args determine the exact behavior of the command. The following commands are possible for stack objects:
stackName clear
Remove all items from the stack.
stackName destroy
Destroy the stack, including its storage space and associated command.
stackName peek ?count?
Return the top count items of the stack, without removing them from the stack. If count is not specified, it defaults to 1. If
count is 1, the result is a simple string; otherwise, it is a list. If specified, count must be greater than or equal to 1. If
there are not enoughs items on the stack to fulfull the request, this command will throw an error.
stackName pop ?count?
Return the top count items of the stack, and remove them from the stack. If count is not specified, it defaults to 1. If count is
1, the result is a simple string; otherwise, it is a list. If specified, count must be greater than or equal to 1. If there are
not enoughs items on the stack to fulfull the request, this command will throw an error.
stackName push item ?item...?
Push the item or items specified onto the stack. If more than one item is given, they will be pushed in the order they are listed.
stackName size
Return the number of items on the stack.
BUGS, IDEAS, FEEDBACK
This document, and the package it describes, will undoubtedly contain bugs and other problems. Please report such in the category struct
:: stack 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.
KEYWORDS
graph, matrix, queue, tree
struct 1.3.3 struct::stack(n)
12-09-2010
