Pichet Premteerawatchai creator Batanov, Dencho N. Chairperson Sadananda, R. Examination committee Guha, Sumanta Examination committee AIT Self-Support Scholarship Donor text series technical report th Pathum Thani, Thailand Asian Institute of Technology 2003 continuing eng 51 p. : ill. In the world of web technology, web services are a new technology. Web Services have many components; for example, SOAP (Simple Object Access Protocol), WSDL (Web Services Description Language), UDDI (Universal Description Discovery and Integration), and XML (eXtensible Markup Language). Web services provide services which have specific functions for web clients. Developers can choose many object-oriented programming languages for building web services. Popular languages in web services are C++, Java, and C#. In this study, a comparative analysis of C++, Java, and C# related to web services development will be conducted. Also, calculator a web application, which is a simple web service, will be created. The environments of three languages, which are use for creating web services, is gSOAP compiler (for C++), J2SE and JWSDP (for Java) , and Visual Studio.NET (for C#). The entire processes of developing calculator web services are described throughout this study. A thesis submitted in partial fulfillment of the requirements for the degree of Masters of Science, School of Advanced Technologies Thesis (M.Sc.) - Asian Institute of Technology, 2003 C++ (Computer program language) Java (Computer program language) Object-oriented programming (Computer science) Web site development Asian Institute of Technology. http://203.159.5.9/ait-thesis/detail.php?q=B11507 http://203.159.5.9/ait-thesis/detail.php?q=B11507 040723 20260817173320.0