书中列出了C用户经常问的400多个经典问题，涵盖了初始化、数组、指针、字符串、内存分配、库函数、C预处理器等各个方面的主题，并分别给出了解答，而且结合代码示例阐明要点。(The book lists more than 400 classic questions that C users often ask, covering topics such as initialization, arrays, pointers, strings, memory allocation, library functions, C preprocessor and so on, and gives answers respectively, and illustrates the main points with code examples.)