Shell Programming and Scripting

NAMES=( Kim Lee Jack Sam Nick Smith )

function listname {

  echo "List of Name:-"

  for((i=1;i<=${#NAMES[@]};i++))
  do
      printf "%d-%-8s" $i "${NAMES[i-1]}"
      ((i%4==0)) && printf "\n"
  done
  printf "\n"
}

function name {

    printf "\n"
    read -p "Which name you want to change? " iname

    if [ -n "$iname" -a $iname -gt 0 -a $iname -le ${#NAMES[@]} ] 2> /dev/null
    then

        nam="${NAMES[iname-1]}"

        read -p "Enter $nam: " AGE[$iname-1]

    else
         echo "You did not enter a number"
         echo "between 1 and ${#NAMES[@]}."
    fi

    echo
    read -p "Do you want another change? " anothchang
    [[ $anothchang = [yY] || $anothchang = [yY][Ee][Ss] ]]
}

function output {
  for((i=0;i<${#NAMES[@]};i++))
  do
      printf "%s(%d)\n" "${NAMES[i]}" ${AGE[i]}
  done
}


listname
while name
do
  output
  listname
done
output