define argument

The best example of variable-length argument lists function is printf () The proper declaration for printf () is Int printf (char * format ,...) Where the declaration... means that the number and types of these arguments may vary. The

This article is reproduced from my other blog, welcome you click to see, help me to add a bit popular ^_^ ImpyySelect moduleAs prompted by the Python reference manual, Optparse is obsolete and should be used ArgparseTutorial ConceptsThe Argparse

This article mainly introduces the function of variable parameter, then analyzes its principle, how the programmer realizes and encapsulates them, and finally it is possible problems and avoid measures.VA functions (variable argument function), the

When you use Python for scripting, it is often necessary to invoke the Python script module in the form of a terminal interaction. At this timeSupport for providing the underlying command-line parameters in a Python module is essential. So, in

Focus:1. Each time the function is called, its formal parameters are recreated and the parameters are initialized with the passed-in arguments.Note: the mechanism of formal parameter initialization is the same as the initialization of variables. 2.

There are many places in the C language where macro definitions are used, such as in header files to prevent header files from being repeatedly included: #ifndef ctest_header_h #define CTEST_HEADER_H /header file content #endif Many macro

1 NO parameter macro definitionThe macro name of the parameterless macro is not followed by a parameter.The general form of its definition is:#define Identifier stringWhere the "#" indicates that this is a preprocessing command. All that begin with "

#define是C语言中提供的宏定义命令, the main purpose is to provide programmers with a certain degree of convenience in programming, and to a certain extent to improve the efficiency of the program, but students often do not understand the nature of the command,

1, define--(no parameter macro definition)Usage: The general form is: #define Identifier string(1) "#" means that it is a pre-processing command, usually "#" is the pre-processing command;"Define" defines the command for the macro; "identifier" is

Variable parameter lists can be implemented with macros defined in the Stdarg.h header file, which is part of the standard library. This header file declares a type va_list and three macros----Va_start,va_arg,va_end. You can declare a variable of