摘要：The UNIX operating system provides its services through a set of system calls, which are in effect functions within the operating system that may be... 阅读全文

摘要：Input and ouput are not part of the C language itself. The ANSI stadard defines many library functions precisely, so that they can exist in compatib... 阅读全文

摘要：A structure is a collection of one or more variables, possibly of different types, grouped together under a single name for convenient handling. Str... 阅读全文

摘要：5.1 Pointers and Addresses A typical machine has an array of consecutively numbered or addressed memory cells that may be manipulated individually or... 阅读全文

摘要：4.1 Basic of Functions A program is just a set of definitions of variables and functions. Communication between the functions is by arguments and val... 阅读全文