This C tutorial explains how to use the #define preprocessor directive in the C language. Description In the C Programming Language, the #define directive allows the definition of macros within your source code. These macro definitions allow constant values to be declared for use throughout your ...
The #define preprocessor command specifies a constant or a micro substitution. In simple words, the “#define” command is a global call in which a statement is passed and valid throughout the program. The concept of the #define in the C programming lang
For instance, you might use it to print the value of an expression as well as the expression itself (for debugging purposes). PRINT_TOKEN(x + y); 参考: 1、The C Preprocessor 2、Preprocessor directives
Complex macro with arguments (function like macro) in C language C language #ifdef, #else, #endif Pre-processor with Example C language #if, #elif, #else, #endif Pre-processor with Example Parameterized Macro - we cannot use space after the Macro Name ...
The scope of a symbol created by using #define is the file in which it was defined. See#iffor an example of how to use #define. See Also Concepts C# Programming Guide Reference C# Preprocessor Directives const (C# Reference) Other Resources ...
The #define directive must appear in the file before you use any instructions that aren't also preprocessor directives.You can also define a symbol with the /define compiler option. You can undefine a symbol with #undef.A symbol that you define with /define or with #define does not ...
Preprocessor directives Preprocessor directives #define directive (C/C++) #error directive (C/C++) #if, #elif, #else, and #endif directives (C/C++) #ifdef and #ifndef directives (C/C++) #import directive (C++) #import attributes (C++) #include directive (C/C++) #line directive (C/C++)...
This value is any combination of letters, digits, and punctuation that is valid for the C/C++ preprocessor. value Integer, character string, or line of text. Example This example assigns values to the names NONZERO and USERCLASS: syntax Copiere #define NONZERO 1 #define USERCLASS "My...
Video Tutorial: #undef Preprocessor Directive: C Program YouTube Link:https://www.youtube.com/watch?v=1FwlFR9PQDE[Watch the Video In Full Screen.] Source Code: #undef Directive: C Program view plaincopy to clipboardprint? #include<stdio.h> ...
Builder.defineMacro("__INT"+ Twine(TypeWidth) +"_C_SUFFIX__", ConstSuffix); } 开发者ID:clawplach,项目名称:duetto-clang,代码行数:16,代码来源:InitPreprocessor.cpp 示例4: getTargetDefines ▲点赞 1▼ voidWebAssemblyTargetInfo::getTargetDefines(constLangOptions &Opts, ...