'ch 19a
dim a[6] as int
dim number as int
a[0]=2  'our sorted data
a[1]=5
a[2]=7
a[3]=12
a[4]=19
a[5]=31

Function find(b as int)
  find = -1 'if we don’t find the value return -1
  for i=0 to 5 
    if a[i] = b then
	find = i
    end if
  next
end function

input "enter your number ", number
print "your number is in slot", find (number)