scripting problems..

imnna2 · 03-30-2001, 12:06 PM

I have been working about a week trying to get a script file to work, and I can't see anything but 'syntax' errors.

what i am trying to accomplish is:
I need a script that prompts user for age and weight - needs to add weight and age together; if these values combined are less than 275 it needs to 'echo' up 15 from the number ; if it is is more than 275 it needs to 'echo' down 15.

echo "Please enter your age."
read $age
echo "Please enter your weight."
read $weight

if [ $age + $weight -lt 275 ]
read $count

while [ $count -lt 275 ]

do
count = `expr $count + 1`
// this is where I am getting confused.
// what do I use to have the count stop at 15 from this total?

Thanks in advance,
imnna2

crabboy · 03-30-2001, 08:17 PM

Here is my attempt at the script. I can't say I completely understood the requirements, but I took a couple guesses.

Code:

#!/bin/sh

ECHO='/bin/echo'
LIMIT=275
INCREMENT_VALUE=1
RANGE_FROM_LIMIT=15
ACTUAL_LIMIT=0

$ECHO "Please enter you age "
read AGE

$ECHO "Please enter your weight "
read WEIGHT

AGE_WEIGHT=`expr $AGE + $WEIGHT`

if [ $AGE_WEIGHT -lt $LIMIT ]; then
   INCREMENT_VALUE=`expr $INCREMENT_VALUE '*' 1`
   ACTUAL_LIMIT=`expr $LIMIT - $RANGE_FROM_LIMIT`
   OP="-le"

elif [ $AGE_WEIGHT -gt $LIMIT ]; then
   INCREMENT_VALUE=`expr $INCREMENT_VALUE '*' -1`
   ACTUAL_LIMIT=`expr $LIMIT + $RANGE_FROM_LIMIT`
   OP="-ge"
fi

if [ $ACTUAL_LIMIT -ne 0 ]; then
   while [ $AGE_WEIGHT $OP $ACTUAL_LIMIT ]; do
      $ECHO $AGE_WEIGHT
      AGE_WEIGHT=`expr $AGE_WEIGHT + $INCREMENT_VALUE`
   done
fi

$ECHO done
exit 0

imnna2 · 04-02-2001, 09:44 AM

That's pretty close and I see what I was doing wrong, I thank you. It was supposed to increment from the total of the age & weight only 15 characters. (ie
Age was 50 and weight was 50 this would equal 100 which is less than 275; so I need it to count from 100 to 115. If the total was 300 I would need it to count from 300 down to 285.

Puzzled but learning.