Exploring FORTH

FORTH IS FAST, FORTH IS BRILLIANT-GO FORTH! FORTH is a brilliant language with remarkable potential. It is four times as compact and up to ten times as fast as BASIC. It is also easy to learn, interest in FORTH is growing rapidly and versions of FORTH are now available for an increasing range of micros. This practical introduction to programming in FORTH has been written especially for beginners. Many examples are provided for you to try. Key them in and watch things happen on the screen. Try typing in something different and see if the effect is what you expect. This is the best, most creative way to learn FORTH fast. If you want to be truly versatile, you cannot afford to ignore FORTH. This book shows you how to grasp this exciting new language and what you can achieve. Using This Book vi 1 Which FORTH? 1 2 Why FORTH? 6 3 Stacking It Up 11 4 What Is The Stack? 23 5 Numbers in Store 29 6 See How They Run 40 7 Interactive FORTH 59 8 Taking Decisions 78 9 Over and Over 101 10 Sorting Numbers 117 11 Kinds of Numbers 133 12 AND and OR 152 Appendix A: FORTH on Other Computers 167 Appendix B: ASCII Codes 171 Index of FORTH Words 172 Subject Index 175