Introduction to the Ch Language Environment Getting Started 2D/3D Plotting in Ch/C++ Scientific Numerical Computing Quick Animation Shell Programming Common Gateway Interface Safe Ch Ch Applet for Network Computing Extensions to C Differences between Ch and C++ Feature Comparison of Ch with MATLAB®/Mathematica® Function and Syntax Comparison of Ch with MATLAB® An introduction to Ch: Implementing a temperature converter in Ch. by Sriranga Veeraraghavan. Summary: Ch provides a very nice environment for learning C and for quickly developing and testing C programming features. This article is a quick introduction to Ch by writing a small Ch program for converting between the Fahrenheit and Celsius temperature scales.