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Homework and Emergencies Homework & Coursework Questions UNIX script coding HW question Post 302894349 by renegade755 on Tuesday 25th of March 2014 02:11:57 AM
Old 03-25-2014
Quote:
Originally Posted by bakunin
OK, what exactly have you tried? Post your tries here and we can tell you why they don't work or what you do wrong.

bakunin
thats what ive tried
Code:
echo -n "Enter first number " 
read a 
echo -n "Enter second number " 
read b 
if [ $x == 'A' -o $x == 'a' ] ; then 
  c=$(( a + b )) 
fi 
if [ $x == 'B' -o $x == 'b' ] ; then 
  c=$(( a - b )) 
fi 
if [ $x == 'C' -o $x == 'c' ] ; then 
  c=$(( a * b )) 
fi 
echo "The answer is $c"


Last edited by Franklin52; 03-25-2014 at 04:15 AM.. Reason: Please use code tags
 

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echo(1B)					     SunOS/BSD Compatibility Package Commands						  echo(1B)

NAME
echo - echo arguments to standard output SYNOPSIS
/usr/ucb/echo [-n] [argument] DESCRIPTION
echo writes its arguments, separated by BLANKs and terminated by a NEWLINE, to the standard output. echo is useful for producing diagnostics in command files and for sending known data into a pipe, and for displaying the contents of envi- ronment variables. For example, you can use echo to determine how many subdirectories below the root directory (/) is your current directory, as follows: o echo your current-working-directory's full pathname o pipe the output through tr to translate the path's embedded slash-characters into space-characters o pipe that output through wc -w for a count of the names in your path. example% /usr/bin/echo "echo $PWD | tr '/' ' ' | wc -w" See tr(1) and wc(1) for their functionality. The shells csh(1), ksh(1), and sh(1), each have an echo built-in command, which, by default, will have precedence, and will be invoked if the user calls echo without a full pathname. /usr/ucb/echo and csh's echo() have an -n option, but do not understand back-slashed escape characters. sh's echo(), ksh's echo(), and /usr/bin/echo, on the other hand, understand the black-slashed escape characters, and ksh's echo() also understands a as the audible bell character; however, these commands do not have an -n option. OPTIONS
-n Do not add the NEWLINE to the output. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWscpu | +-----------------------------+-----------------------------+ SEE ALSO
csh(1), echo(1), ksh(1), sh(1), tr(1), wc(1), attributes(5) NOTES
The -n option is a transition aid for BSD applications, and may not be supported in future releases. SunOS 5.11 3 Aug 1994 echo(1B)
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