Q101185: INFO: Using cout in an Application and DLL

Article: Q101185
Product(s): Microsoft C Compiler
Version(s): 1.0,1.5,2.0,4.0,5.0,6.0
Operating System(s): 
Keyword(s): kbLangCPP kbVC kbVC100 kbVC150 kbVC200 kbVC400 kbVC500 kbVC600 kbDSupport
Last Modified: 26-MAR-2002

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The information in this article applies to:

- Microsoft Visual C++, versions 1.0, 1.5, 2.0, 4.0 
- Microsoft Visual C++, 32-bit Enterprise Edition, versions 5.0, 6.0 
- Microsoft Visual C++, 32-bit Professional Edition, versions 5.0, 6.0 
- Microsoft Visual C++, 32-bit Learning Edition, version 6.0 
- Microsoft Visual C++.NET (2002) 
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SUMMARY
=======

The standard output stream (cout) can be used in an application or Dynamic- Link
Library (DLL) to display information. When using cout in an application and a
DLL simultaneously, special care is needed to ensure that the text display is
synchronized.

Because the cout text stream is buffered, text from a DLL may not appear correct
relative to text from the application. To correct this problem, always use the
endl manipulator when outputting text with cout. Below is an example:

     cout << "Hello World" << endl;

The endl manipulator inserts a newline character and then flushes the stream
buffer. This ensures that text displayed from the application and DLL is
synchronized.

Additional query words:

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Keywords          : kbLangCPP kbVC kbVC100 kbVC150 kbVC200 kbVC400 kbVC500 kbVC600 kbDSupport 
Technology        : kbVCsearch kbVC400 kbAudDeveloper kbvc150 kbvc100 kbVC500 kbVC600 kbVC200 kbVC32bitSearch kbVC500Search
Version           : :1.0,1.5,2.0,4.0,5.0,6.0
Issue type        : kbinfo

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