WEBIO library for executing application programs on the Internet

Before Internet and WWW were available, conventional application programs were executed on terminals connected to host machines. Today, many services are provided through Web browsers connected to the Internet. As we can see easily, it is difficult to execute an application program developed for the conventional terminals on the Internet because the I/O scheme used for terminals is different from the I/O scheme used for Web browsers. We describe the WEBIO library that extends the concepts of conventional terminal I/O to Web I/O. By using the library, we can easily modify application programs developed for terminals to be executed through Web browsers and we can easily build application programs that are executed through Web browsers. The library consists of a CGI program and a set of Web I/O routines for programming languages, namely C and Prolog.