VS 2013 下如何进行 #define 啊(C++) - V2EX
Home Sign Up Sign In
请不要在回答技术问题时复制粘贴 AI 生成的内容
patrickstar

VS 2013 下如何进行 #define 啊(C++)

  •   
  •   patrickstar Sep 1, 2016 3120 views
    This topic created in 3546 days ago, the information mentioned may be changed or developed.
    下面的代码在 g++ 下没有任何问题，但是在 VS2013 下直接编译错误 (syntax error : missing ';' before identifier 'RELEASE')

    #define LIB_BUILDTIME RELEASE " " __DATE__ " " __TIME__
    const char version_string[] = "$Build: " LIB_BUILDTIME " $";

    不知道为何在 VS 2013 下无法链接字符串
  • define
  • time__
  • vs2013
  • syntax
    5 replies    2016-09-01 14:05:41 +08:00
    acros
        1
    acros  
       Sep 1, 2016
    不知道从哪开始吐槽好，你是想输出编译时间？
    C++字符串链接是##
    wevsty
        2
    wevsty  
       Sep 1, 2016
    VS 下面并没有 RELEASE 这样的一个预处理宏定义，对 VS 来说所以 RELEASE 并不是一个有效的字符串，是一个未知的东西，所以也不可能做字符串拼接。
    wevsty
        3
    wevsty  
       Sep 1, 2016
    @acros 楼主这样直接"str1""str2"也是可以的语法上是允许的，编译器会自动处理拼接字符串
    acros
        4
    acros  
       Sep 1, 2016
    哦。我明白楼主第一句的意思了
    RELEASE 和 DEBUG 默认没有声明的， vs 下是_DEBUG 吧

    另外这个不需要加""去连接
    #define LIB_BUILDTIME __DATE__ __TIME__
    这样就是一个字符串了
    acros
        5
    acros  
       Sep 1, 2016
    @wevsty 我还以为他把 RELEASE 前的下划线漏了
    About     Help     Advertise     Blog     API     FAQ     Solana     988 Online   Highest 6679       Select Language
    创意工作者们的社区
    World is powered by solitude
    VERSION: 3.9.8.5 35ms UTC 19:11 PVG 03:11 LAX 12:11 JFK 15:11
    Do have faith in what you're doing.
    ubao msn snddm index pchome yahoo rakuten mypaper meadowduck bidyahoo youbao zxmzxm asda bnvcg cvbfg dfscv mmhjk xxddc yybgb zznbn ccubao uaitu acv GXCV ET GDG YH FG BCVB FJFH CBRE CBC GDG ET54 WRWR RWER WREW WRWER RWER SDG EW SF DSFSF fbbs ubao fhd dfg ewr dg df ewwr ewwr et ruyut utut dfg fgd gdfgt etg dfgt dfgd ert4 gd fgg wr 235 wer3 we vsdf sdf gdf ert xcv sdf rwer hfd dfg cvb rwf afb dfh jgh bmn lgh rty gfds cxv xcv xcs vdas fdf fgd cv sdf tert sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf shasha9178 shasha9178 shasha9178 shasha9178 shasha9178 liflif2 liflif2 liflif2 liflif2 liflif2 liblib3 liblib3 liblib3 liblib3 liblib3 zhazha444 zhazha444 zhazha444 zhazha444 zhazha444 dende5 dende denden denden2 denden21 fenfen9 fenf619 fen619 fenfe9 fe619 sdf sdf sdf sdf sdf zhazh90 zhazh0 zhaa50 zha90 zh590 zho zhoz zhozh zhozho zhozho2 lislis lls95 lili95 lils5 liss9 sdf0ty987 sdft876 sdft9876 sdf09876 sd0t9876 sdf0ty98 sdf0976 sdf0ty986 sdf0ty96 sdf0t76 sdf0876 df0ty98 sf0t876 sd0ty76 sdy76 sdf76 sdf0t76 sdf0ty9 sdf0ty98 sdf0ty987 sdf0ty98 sdf6676 sdf876 sd876 sd876 sdf6 sdf6 sdf9876 sdf0t sdf06 sdf0ty9776 sdf0ty9776 sdf0ty76 sdf8876 sdf0t sd6 sdf06 s688876 sd688 sdf86