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Doing simple math for children.

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# 8  
Old 04-27-2011
Quote:
What happens in here? something wrong with
if ["$answer1" -eq "$((i*j))"]
This just compares whatever their input is with the actual answer.

I've checked that and both values come out correct. If you add the bolded statements to it, you'll see that the values come out correctly, so it should just be comparing them.

Code:
 
#!/bin/bash
i=1
while [ $i -le 10 ]; do
    j=1
    while [ $j -le 10 ]; do
      echo "$i * $j = "  
      read answer1
      echo "answer1 is... $answer1"
     echo "calculation is... $((i*j))"
      if ["$answer1" -eq "$((i*j))"]
      then
        echo 'Right!'
        ((j+=1))
      else
        echo 'Wrong!' 
     fi     
    done
    ((i+=1))
done

I'm not sure why you're getting that error... pretty awfully non-descript. I'll take a look at your second script and see if we can manage to get that to work how you want it.
# 9  
Old 04-28-2011
Quote:
Originally Posted by ugurgazi
What now happens is that I get the next while running the script:

Code:
~$   bash test1
1 * 1 = 
1
test1: line 8: [1: command not found
Wrong!

That's because you need spaces between your square brackets and contents of the test. In the following example, the first test succeeds, the second test errors:
Code:
if [ 1 -eq 1 ]; then echo yes; fi
if [1 -eq 1]; then echo yes; fi

Regards,
Mark.
# 10  
Old 04-28-2011
Yes, still practicing, and making a script for the children.
So far thanks for your information. Together with the above script I have a second script. (see below)

What goes wrong is, when a question is asked wrong, it will repeat this question. So far so good.
But when the second time the answer to the question is given correct, it still repeats!
I think there is something wrong with the "else.......read $getallinks x $getalrechts" part... But what is?

It has to repeat the question with the wrong answer till the correct answer is given.. !

Still learning much with bash scripting.. Thanks to you!



Quote:
#!/bin/bash

while true
do
getallinks=$((RANDOM/(32767/10)+1))
getalrechts=$((RANDOM/(32767/10)+1))

echo "Hoeveel is $getallinks x $getalrechts ?"
read -p "Antwoord: " antwoordleerling
antwoordjuiste=$((getallinks*getalrechts))

if test $antwoordleerling == $antwoordjuiste
then
echo "Goed zo! $getallinks x $getalrechts is inderdaad $antwoordjuiste."
else

while (( $antwoordleerling != $antwoordjuiste ))
do
echo "Fout! Probeer het nogmaals $getallinks x $getalrechts ="
read $getallinks x $getalrechts

done
fi
done
# 11  
Old 04-28-2011
You're creating an infinite loop with this. Once it's wrong, it never exits because you never get a new value.

Code:
 
while (( $antwoordleerling != $antwoordjuiste ))
do
echo "Fout! Probeer het nogmaals $getallinks x $getalrechts =" 
read $getallinks x $getalrechts

I think this should fix it and work to your liking.

Code:
 
#!/bin/bash
while true
do
getallinks=$((RANDOM/(32767/10)+1))
getalrechts=$((RANDOM/(32767/10)+1))
echo "Hoeveel is $getallinks x $getalrechts ?"
read antwoordleerling
antwoordjuiste=$((getallinks*getalrechts))
if test  $antwoordleerling == $antwoordjuiste 
then
echo "Goed zo! $getallinks x $getalrechts is inderdaad $antwoordjuiste."
else
while (( $antwoordleerling != $antwoordjuiste ))
do
echo "Fout! Probeer het nogmaals $getallinks x $getalrechts =" 
read antwoordleerling
done
fi
done
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