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if statement in a while loop

 
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# 1  
Old 11-07-2006
Data if statement in a while loop
#!/usr/bin/ksh
echo Please enter
while read n
do
echo $n >> datafile
done

question:

How can I enject an if statement that if the users enter 0 (zero) the program will exit?

this is what I have but not working

#!/usr/bin/ksh
echo Please enter number
while read n
do
if $n=0
then
exit
else
echo $n >> datafile
fi
done


Thanks!
# 2  
Old 11-07-2006
Read up on the test command (man test)
Code:
if [[ $n -eq 0 ]]
then
    exit
fi

# 3  
Old 11-07-2006
You have to use the test construct in the if statement:

Code:
#!/usr/bin/ksh

echo Please enter number

while read n
do
  if [ $n=0 ]
  then
    exit
  else
    echo $n >> datafile
  fi
done

 
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