Bash script for mental math exercices.

calc.sh

#!/bin/bash


TOTAL=0
HTOTAL=0

function generator(){
# $1: modulus
# $2: addrank
# $3: multrank

MOD=$1
MULTRANK=$2
NBR=0
until (( NBR != 0 ))
do
    NBR=$(( ( RANDOM % $MOD)))
done
TOTAL=$NBR
ROUNDED=$(( NBR * MULTRANK ))
#echo $TOTAL
}


#generator 10 100
#echo $TOTAL
#generator 100 100 
#echo $TOTAL
#generator 1000 100 
#echo $TOTAL
#generator 10 100
#echo $ROUNDED

function question(){
# $1: lle niveau

NIVEAU=$1
LEVEL=$2
generator $NIVEAU 100
clear
echo "Trouver le complementaire de $TOTAL jusqu'a $LEVEL"
}

#question 10 20
#question 100 100
#question 1000 1000



function exercice(){
i=0
TARRAY=()
while true
do
    function check(){
        if [[ $rep != $rez ]]; then
                echo "Oops!! Verifiez votre reponse: le resultat est: $rez"
        else
            echo "(GOOD!) t:$duration"
        fi
        read -p "Continuer [Entrer]"
    }
    question $1 $2
    SECONDS=0
    read -p '==> ' rep
    duration=$SECONDS
    TARRAY[i]=$duration
    ((i++))
    rez=$(( $2 - $TOTAL ))
    case $rep in
        [Qq]* ) echo ${TARRAY[*]}; read -p "Continuer [Entrer]"; break;;
        * ) check;;
    esac
done
}
while true; do
  clear
  echo "### Choisissez le niveau 1,2 ou 3 "
  read -p 'Votre choix :   ' LEVEL
  case $LEVEL in
  [1]* ) exercice 10 20;;
  [2]* ) exercice 100 100;;
  [3]* ) exercice 1000 1000;;
  [Qq]* ) exit;;
  * ) echo "SVP, entrez un des chiffres. ";;
  esac
done