Specifies an optional parameter for a member function. Αντιγραφή [optional] Remarks TheoptionalC++ attribute has the same functionality as theoptionalMIDL attribute. Example The following code shows howoptionalmight be used: // cpp_attr_ref_optional.cpp // compile with: /LD #include...
編譯器警告 (層級 1) C4087'function': 搭配 'void' 參數清單宣告 編譯器警告 (層級 1) C4088'function': 指標與實質參數 'parameter_number' 中的不相符,型式參數 'parameter_number' 編譯器警告 (層級 1) C4089'function': 類型與實質參數 'parameter_number' 中的不同,型式參數 'parameter...
如果发现必需的参数未被提供,可以使用message(FATAL_ERROR "message")命令抛出错误,中断CMake的配置或构建过程。 2.1.2 处理可选参数 (Handling Optional Arguments) 对于可选参数,我们可以为它们提供默认值或在参数未被指定时采取特定的行动。这种方式增加了函数和宏的灵活性,使得它们能够适应更多的使用场景。 2.2 使...
parameter-declaration parameter-list,parameter-declaration parameter-declaration: declaration-specifiersdeclarator declaration-specifiersabstract-declaratoropt The parameter list in an old-style function definition uses this syntax: identifier-list: /* Used in obsolete-style function definitions and...
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parameter-declaration parameter-list,parameter-declaration parameter-declaration: declaration-specifiersdeclarator declaration-specifiersabstract-declaratoropt The parameter list in an old-style function definition uses this syntax: identifier-list: /* Used in obsolete-style function definitions and...
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# applications to run on Far-East Windows. (This is an optional parameter. # The system locale is the default.) # # Define _WIN32_IE = [ 0x0300 | 0x0400 | 0x0500 | 0x0600 | 0x0700 | 0x0800] prior to including win32.mak to ...
本部分列出的文章描述了 Microsoft C/C++ 编译器警告消息 C4000 - C4199。 重要 Visual Studio 编译器和生成工具可报告多种类型的错误和警告。 发现错误或警告后,生成工具可做出有关代码意向的假设并尝试继续,因此,可能会同时报告更多问题。 如果工具做出错误假设,则后续错误或警告可能不适于你的项目。 ...
If an additional optional parameterSYSTEMis set to a truthy value, the SYSTEM directory property of the subdirectory added will be set to true. See theadd_subdirectoryandSYSTEMtarget property for details. A single-argument compact syntax is also supported: ...