如果需要动态数组,应该使用指针和动态内存分配(如malloc)来实现。 综上所述,解决“use of undeclared identifier 'bool'”错误的最简单方法是在你的C源文件中包含<stdbool.h>头文件。如果问题仍然存在,可能需要检查编译器的设置或考虑升级到一个支持C99标准的编译器。
client.c:441:19: error: use of undeclared identifier 'res' return (void *)(res == 0 ? Qtrue : Qfalse); ^ client.c:762:3: error: use of undeclared identifier 'my_bool' my_bool boolval; ^ client.c:793:7: error: use of undeclared identifier 'boolval' boolval = (value == Qfal...
c语言出现Use of undeclared identifier 问题是设置错误造成的，解决方法为：1、遇到警告Use of undeclared identifier ‘p’ ...就是说这里有无法识别的p。2、可以直接找到这个p值。p下面有一个_,说明就是该处出错。3、要是该p值不用的话就直接删掉，若是需要用的话就直接声明好了，很有可能声明...
[skView presentScene:@"scene"]; //Another error:"incompatible pointer types sending 'NSString*' to parameter of type 'SKScene _Nullable'" - (BOOL)shouldAutorotate{ // Error in this line :"Use of undeclared identifier 'shouldAutorotate' " return YES; } Please help me. Thank you. Answered...
oc调用swift Use of undeclared identifier oc调用mac串口,网上对于mac的资料相对于windows和linux来比杯水车薪,博主在大学是从单片机学到了linux的应用开发,刚刚工作,主要方向是mac系统上的应用开发。博主是菜鸡一枚,但是愿意分享我写的代码,有大神来交流我很是欢迎
tags=[haxe,static] - Sys.cpp Error: /home/josef/haxelib/hxcpp/4,0,64/src/hx/libs/std/Sys.cpp:174:14: error: use of undeclared identifier '_wsetlocale'; did you mean 'setlocale'? return _wsetlocale(LC_TIME,l.wchar_str()); ^~~~ setlocale /home/josef/Dokumente/git/emsdk/upstream/em...
I'm creating a tower defense game that uses Lua as a scripting engine. When compiling with both g++ and clang++ I get the following error. include/sol/sol/stack.hpp:100:31: error: use of undeclared identifier "lua_tounsigned" return stat...
data/mysql-server/sql-common/client.c:2793:16: note: 'cli_read_query_result' declared here static my_bool cli_read_query_result(MYSQL *mysql); ^ /data/mysql-server/sql-common/client.c:2813:3: error: use of undeclared identifier 'cli_stmt_execute'; did you mean 'mysql_stmt_execute'?
bash: export: `=': not a valid identifier 2019-12-24 21:34 −原因是export 之后的内容中存在空格。将空格删去即可... 任仁人 0 3029 ValueError: The truth value of a Series is ambiguous. Use a.empty, a.bool(), a.item(), a.any() or a.all(). ...
Use --sandbox_debug to see verbose messages from the sandbox source/extensions/common/async_files/async_file_manager_thread_pool.cc:134:49: error: use of undeclared identifier 'O_TMPFILE' open_result = posix().open(path_.c_str(), O_TMPFILE | O_RDWR, S_IRUSR | S_IWUSR); ^ source...