(Based on a paper published by the author in Bell Labs in 1985, the author expanded his office experience into this classic book with valuable value to C programmers. The starting point of writing this book is not to criticize the C language, but to help C programmers bypass the traps and obstacles in the programming process. The whole book is divided into 8 chapters, respectively from the lexical analysis, syntax semantics, connection, library function, pre-manager, portability failure and other aspects to analyze the problems that may be encountered in C programming. Finally, the author gives some practical suggestions in one chapter. This book is suitable for C programmers with certain experience to read and learn, even if you are a master of C programming, this book should also become a must-have book for your desk. Chapter 0 Introduction 1 Chapter 1 Lexical "snares" 51.1 = different from == 61.2 and different from sum 81.3 The "greedy method" in lexical analysis 81.4 Integer constants 101.5 Characters and strings 11 Chapter 2 Syntax "snares" 152.1 Understanding function declarations 152.2 Operator precedence issues 192.3 Note the semicolon as a sentence-ending symbol 242.4 Switch sentences 262.5 Function calls 282.6 Problems caused by "dangling" else 29 Chapter 3 Semantics "snares" 333.1 Pointers and arrays 333.2 Pointers that are not arrays 393.3 Array declarations as parameters 413.4 Preventing "examples" 433.5 Null pointers are not empty strings 443.6 Divide computation and asymmetric divide 453.7 Order of evaluation 573.8 Operators, and !593.9 Integer overflow 613.10 Provide return value for function main 62 4th Chapter linking 654.1 What is a linker 654.2 Declarations and definitions 674.3 Naming conflicts and static modifiers 694.4 Formal parameters, actual return values ??704.5 Detecting external types 774.6 Header files 80 Chapter 5 Library functions 835.1 Getchar functions that return integers 845.2 Update sequence files 855.3 Buffered Output and Memory Allocation 865.4 Detecting Errors with errno 885.5 Library Function Signal 89 Chapter 6 The Premanager 936.1 Spaces in Macro Definitions Cannot Be Ignored 946.2 Macros Are Not Functions 946.3 Macros Are Not Sentences 996.4 Macros Are Not Type Definitions 101 Chapter 7 Portability 1037.1 Responding to C language specification changes 1047.2 Restrictions on identifier names 1067.3 Size of an integer 1077.4 Whether a character is a signed or unsigned integer 1087.5 Shift operators 1097.6 Memory location 01107.7 Cutoffs that occur during division 1117.8 Size of random numbers 1137.9 Case conversion 1137.10 First release, then reassign 1157.11 Portability problem one such as 116 Chapter 8 Suggestions and Answers 1218.1 Suggestions 1228.2 Answers 126 Appendix APRINTF, VARARGS and STDARG 145 Appendix B Koenig and Moo Spouse Interview 167
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