in reply to Guess the number

do the following steps
1.put this file in a web server directory which executes cgi scripts and change permission to 755 (assuming a *nix server)
2.add print " Content-type: text/html \n\n" at top of the program
3.create a html form with a input box and a submit button
4. u can pass the num of tries either from a hidden variable from the HTML form or set a cookie
5. use and get the variables instead of reading from STDIN
hope this helps