What is the extension of qbasic program?

.bas file

====

<--QBASIC CODE end

Now, go and search your computer c:\ directory for the file called: homepage.htm; and, left double click on it to run; your web browser software should automatically launch itself, and, so display the web page output. Right click within an empty space within the web browser page...and, choose View > Source...and, you will be able to see the HTML source codes which were used to originally write the web page with; though, the QBASIC code itself is not displayed but remains entirely hidden.