Why doesn't return ascii code?

Ruby
1

hi
when I type " puts ?a " irb doesn’t return ASCII code of a
character.why?

2

$ cat ruby.rb
puts ?a

$ multiruby ruby.rb

VERSION = 1.8.6-p420
CMD = ~/.multiruby/install/1.8.6-p420/bin/ruby ruby.rb

97

RESULT = pid 94689 exit 0

VERSION = 1.8.7-p352
CMD = ~/.multiruby/install/1.8.7-p352/bin/ruby ruby.rb

97

RESULT = pid 94690 exit 0

VERSION = 1.9.1-p431
CMD = ~/.multiruby/install/1.9.1-p431/bin/ruby ruby.rb

a

RESULT = pid 94691 exit 0

VERSION = 1.9.2-p290
CMD = ~/.multiruby/install/1.9.2-p290/bin/ruby ruby.rb

a

RESULT = pid 94692 exit 0

TOTAL RESULT = 0 failures out of 4

Passed: 1.8.6-p420, 1.8.7-p352, 1.9.1-p431, 1.9.2-p290
Failed:

3

Excuse me, I don’t understand what do you mean . please explain very
basic.
I am really beginner.

4

Hello Amir e.

Use this instead for 1.9.2:

‘a’.ord
97.chr

if you want to keep with the semantics of ? then you can always add
ordinal after the ? sigil which will convert it to a string:
?a.ord

~Stu

5

Things change.

puts ‘a’.ord

–output:–
97

$ cat ruby.rb
puts ‘a’.ord

$ multiruby ruby.rb

VERSION = 1.8.6-p420
CMD = ~/.multiruby/install/1.8.6-p420/bin/ruby ruby.rb

ruby.rb:1: undefined method `ord’ for “a”:String (NoMethodError)

RESULT = pid 94705 exit 1

VERSION = 1.8.7-p352
CMD = ~/.multiruby/install/1.8.7-p352/bin/ruby ruby.rb

ruby.rb:1: undefined method `ord’ for “a”:String (NoMethodError)

RESULT = pid 94706 exit 1

VERSION = 1.9.1-p431
CMD = ~/.multiruby/install/1.9.1-p431/bin/ruby ruby.rb

97

RESULT = pid 94707 exit 0

VERSION = 1.9.2-p290
CMD = ~/.multiruby/install/1.9.2-p290/bin/ruby ruby.rb

97

RESULT = pid 94708 exit 0

TOTAL RESULT = 2 failures out of 4

Passed: 1.9.1-p431, 1.9.2-p290
Failed: 1.8.6-p420, 1.8.7-p352