declare -a array_name
echo "How many groups you want to enter?"
read group_count
echo "enter $group_count groups: "
echo $group_count
for(( c = 0 ; c < $group_count ; c++))
do
  read abc_elements
#  while read abc_elements
#  do
  array_name[$c]="$abc_elements"
#  done
done
echo -e "${array_name[@]}"