WebMar 24, 2013 · As an aside, I'd advise against using namespace std outside of local scope: the extra std:: doesn't hurt, and it reminds both you and the readers of your code that you are using some standard library stuff here. Not to mention IDE completion, header file ordering, new std header file types conflicting with your own types, etc. – WebJul 10, 2024 · What is "using namespace std" and why is it considered a BAD PRACTICE? ... Questions. CodeBeauty. 191 02 : 12 [Error] cout was not delcared in this scope c++, how to fix cout cin not declared in this …
cpp00 - 42 school project - GitHub
WebMar 13, 2024 · 这是一个关于岗位选择的问题,我可以回答。这段代码是c++语言中的输入输出流,用于让用户选择该职工的岗位,其中1代表兼职推销员,2代表经理,3代表销售经理。 WebAug 2, 2024 · This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. ... using namespace std; const char endOfLine = '\n'; ... void cMatrix::mPrint(string name)//printing to file { using namespace std; ofstream resultFile; errorFlag = false; string outputName = name; outputName += "_";t shirts bulk soft organic
c++ - ‘function’ in namespace ‘std’ does not name a type
WebThe compiler itself does not have the definitions of the things that are in any namespace (whether it is std or some other namespace). That is the role of source files and header files. What using namespace std; tells the compiler is that "If you can't find some name in the current namespace, go look in the std namespace as well". WebIn general, if a name is used in a header foo.h, you should include the header bar.h that declares the name in foo.h, or forward-declare the name in foo.h. Otherwise everyone else who includes foo.h will need to remember to make sure bar.h gets included first. Share. Improve this answer. Follow. Web9. Nouns.h doesn't include , but it needs to. You need to add. #include . at the top of that file, otherwise the compiler doesn't know what std::string is when it is encountered for the first time. Share. Improve this answer. Follow. answered Aug 7, … t shirts bulk cotton