/* rexx */

strings.1 = 85865487878
strings.2 = 'oewiopeoewirpo iep '
strings.3 = '4889jfkjdk'
strings.4 = 'hfhjh 767484'
strings.5 = '<&jZ>(){}'
strings.6 = '<&>(){}'

do i = 1 to 6
  say has_alpha(strings.i) '-> alpha? ' "'"strings.i"'"
end

exit

has_alpha: procedure
  parse upper arg string

  if (length(string) = 0 | datatype(string) = 'NUM')
  then
    return 0

  start = c2d( 'A' )
  stop  = c2d( 'Z' )
  do while start <= stop

    if ( pos(d2c(start) , string) \= 0 )
    then
      return 1

    start = start +1
  end

  return 0