I am new to CGI. Our application is coded in C language.
Simple question. we have a web page, where you put in all the information and hit "submit" button and it takes to another page.
Now, we can use the "back" button on the browser to go back to the previous page. Once in the previous page, if I hit the Submit button again, I want an error message.
How to accomplish this task???
Right now....its executing the cgi program again, even after going back using the browser 'back' button feature.