zad 12

#!/bin/bash

echo 'Wpisz a'
read a
echo 'Wpisz n'
read n
echo 'Wpisz r'
read r
echo '----------------'

i=1
s=0

while [ $n -gt 0 ]
do

  i=$[i*a]
  s=$[s+a]
  a=$[a+r]
  n=$[n-1]

done

echo "Suma $s"
echo "Iloczyn $i"