GitBucket
#!/usr/bin/env ruby
# coding: utf-8
require 'cgi'
puts "Content-type: text/html; charset=utf-8\n\n"
c = CGI.new
x = c['foo'].to_i
y = c['bar'].to_i
print(<<~EOF)
<!DOCTYPE html>
<html lang="ja">
<body>
<head><title>WOW</title></head>
<body>
<p>x=#{x}, y=#{y}のとき x+y=#{x+y.to_i}</p>
<form action="./tasizan.rb" method="POST">
<p><input name="foo">と<input name="bar">を足します.</p>
<p><input type="submit" value="計算!">
<input type="reset"></p>
</form>
</body>
</html>
EOF