Microsoft Visual Studio Error C2065 Cout Undeclared Identifier
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Namespace Std Has No Member Cout
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Cout Is Undefined Visual Studio 2015
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Error C2065 Undeclared Identifier
but I get an error: identifier “cout” is undefined. Why? up vote 10 down vote favorite 1 I learn C++ and COM through the books. In the IDE MS Visual Studio 2012 I have created new empty C++ project, and added some existing files to it. My CPP file contains #include row, but in editor I got such messages: Error: identifier "cout" is undefined visual studio cout to output window end Error: identifier "endl" is undefined Screen: Why it happens? c++ visual-studio com visual-studio-2012 share|improve this question asked Nov 3 '12 at 11:03 Andrey Bushman 2,80821655 1 try std::cout and std::endl –srbhkmr Nov 3 '12 at 11:04 1 try copy paste for code –sehe Nov 3 '12 at 11:07 2 Fresh and uncorrupted mind that doesn't know about 'using namespace std;'. Sweet :) –jrok Nov 3 '12 at 11:09 add a comment| 3 Answers 3 active oldest votes up vote 21 down vote accepted You need to specify the std:: namespace: std::cout << .... << std::endl;; Alternatively, you can use a using directive: using std::cout; using std::endl; cout << .... << endl; I should add that you should avoid these using directives in headers, since code including these will also have the symbols brought into the global namespace. Restrict using directives to small scopes, for example #include inline void foo() { using std::cout; using std::endl; cout << "Hello world" << endl; } Here, the using directive only applies to the scope of foo(). share|improve this answer edited Nov 3 '12 at 11:13 answered Nov 3 '12 at 11:0
compile my error c2039: 'cout': is not a member of 'std' programs. I wrote real quick simple program error c2065 undeclared identifier visual c++ to demonstrate: 1
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#include #include using namespace std; int main() visual studio cin { int number; cout << "Please enter a number."; cin >> number; if (number < 10) { cout << http://stackoverflow.com/questions/13208547/the-includeiostream-exists-but-i-get-an-error-identifier-cout-is-undefine "Low"; } else { cout << "High"; } return 0; } When I try to run it I get this: c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\screen.h(56) : error C2065: 'cout' : undeclared identifier c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\screen.h(56) http://www.cplusplus.com/forum/general/8834/ : error C2065: 'flush' : undeclared identifier Please help! Mar 16, 2009 at 10:43pm UTC guestgulkan (2942) Try doing it this way around: 1
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#include using namespace std; #include //put this AFTER the using namespace directive Mar 17, 2009 at 1:01am UTC jdd (95) The error messages are referring to lines in your header file. Look there to spot the error. Mar 17, 2009 at 5:50pm UTC writetonsharma (1459) #include iostream and use namespace std in screen.h. Topic archived. No new replies allowed. C++ Information Tutorials Reference Articles Forum Forum BeginnersWindows ProgrammingUNIX/Linux ProgrammingGeneral C++ ProgrammingLoungeJobs Home page | Privacy policy© cplusplus.com, 2000-2016 - All rights reserved - v3.1Spotted an error? contact us
in C++ for about 3 years.. Since i started uni actually.. Now i gotta implement some stuff for Algorithms and Complexity.. I've got a vague idea of how to do that but thats not my problem.. According to https://www.daniweb.com/programming/software-development/threads/245344/error-c2065-cout-undeclared-identifier my memory and old programs that i dug up for my hard disk the https://bytes.com/topic/c/answers/160211-what-wrong-simple-code following code should not be wrong.. But it is.. At the moment im working on Windows XP with Microsoft Visual Studio 2008.. I've tried various versions of the std thingy like std::cout << "sfsd"; using namespace std; include "stdafx.h" but nothing works.. Heres the first program i did on c++ which now isnt working :p #include #include visual studio #include "stdafx.h" int main() { cout << "Hello World /n"; return 0; } c++ They say understanding of the Artificial Intelligence brings understanding of God.. amzyz 9 posts since Nov 2009 Community Member 6Contributors 21Replies 25Views 6 YearsDiscussion Span 5 Years Ago Last Post by EEBlake 0 JasonHippy 724 6 Years Ago Try this: #include using namespace std; int main() { cout << "Hello World /n"; return 0; } 0 cout is undefined jonsca 1,059 6 Years Ago #include to get the standard header. Then you need either using std::cout; at the top or qualify it in the body of your code with std::cout <<"Yada"; You can also go the using namespace std; route but that brings its own problems. EDIT: Dang... JH, does someone start a stopwatch when we begin posting? 0 Nick Evan 4,005 6 Years Ago cout << "Hello World /n"; Actually this might give you a more 'expected' result: cout << "Hello World \n"; /n is not the same as \n :) 0 Discussion Starter amzyz 6 Years Ago Try this: #include using namespace std; int main() { cout << "Hello World /n"; return 0; } I've tried what you said Jason and i get: fatal error C1010: unexpected end of file while looking for precompiled header. Did you forget to add '#include "stdafx.h"' to your source? and when i do include that library i get the first error again 0 Discussion Starter amzyz 6 Years Ago Actually this might give you a more 'expected' result: cout << "Hello World \n"; /n is not the same as \n :) Would that produce the cout error though? 0 Discussion Starter amzyz 6 Years Ago #include to get the standard header. Then you
your question and get tips & solutions from a community of 418,591 IT Pros & Developers. It's quick & easy. What is wrong with this simple code!? P: n/a IWP506 10 points (and a cookie) to whoever tells me why this code generates these errors: C:\Programming\Microsoft Visual Studio\MyProjects\HelloWorld\main.c(5) : error C2065: 'cout' : undeclared identifier C:\Programming\Microsoft Visual Studio\MyProjects\HelloWorld\main.c(5) : error C2297: '<<' : illegal, right operand has type 'char [2]' #include int main() { cout << "h"; return 0; } Thanks iw****@gmail.com Aug 27 '05 #1 Post Reply Share this Question 5 Replies P: n/a Victor Bazarov IW****@gmail.com wrote: 10 points (and a cookie) to whoever tells me why this code generates these errors: C:\Programming\Microsoft Visual Studio\MyProjects\HelloWorld\main.c(5) error C2065: 'cout' : undeclared identifier C:\Programming\Microsoft Visual Studio\MyProjects\HelloWorld\main.c(5) error C2297: '<<' : illegal, right operand has type 'char [2]' #include Should be #include using std::cout; int main() { cout << "h"; return 0; } Thanks iw****@gmail.com Rename the file to .cpp or .C or .cxx or .c++ or anything that would make it a C++ source file. Your compiler apparently attempts to treat it as a C source file. V Aug 27 '05 #2 P: n/a BigBrian IW****@gmail.com wrote: 10 points (and a cookie) to whoever tells me why this code generates these errors: C:\Programming\Microsoft Visual Studio\MyProjects\HelloWorld\main.c(5) : error C2065: 'cout' : undeclared identifier C:\Programming\Microsoft Visual Studio\MyProjects\HelloWorld\main.c(5) : error C2297: '<<' : illegal, right operand has type 'char [2]' #include It should be #include int main() { cout << "h"; std::cout << "h" << std::endl; Aug 27 '05 #3 P: n/a IWP506 I see... so I could using "using namespace std;" then if I wanted to just make it "cout" and not "std::cout"? BTW, thanks for the uberly quick responses. Aug 27 '05 #4 P: n/a j wrote in message news:11*********************@g47g2000cwa.googlegro ups.com... I see... so I could using "using namespace std;" then if I wanted to just make it "cout" and not "std::cout"? BTW, thanks for the uberly quick responses. The namespaces are there for a reason, so your code does not t