--- a/pre_marking1/collatz_test.sh	Fri Nov 27 15:03:50 2020 +0000
+++ b/pre_marking1/collatz_test.sh	Sat Nov 28 12:09:55 2020 +0000
@@ -69,6 +69,8 @@
       echo -e "  --> success" >> $out
       tsts=$(( 0 )) 
    fi
+else
+   tsts=$(( 1 ))  
 fi