AnothernameforT is still considered a dependent name despite the type variable T from the template declaration not appearing. Note: If you're know some advanced type theory, note that C's notion of a dependent name has almost nothing to do with type theorists' dependent types. The first problem is that extern is only valid before the name of a type, so that's what the compiler is complaining about. The second is that cout is defined in the namespace std, so you need to tell the compiler to look there. The good thing is that the code doesn't say using namespace std. List is part of the std namespace. There are two ways to solve your problem: After your include (s), add: using namespace std; Then your code should work fine. Alternatively, replace line 8 with: std::list a; Either way works, but if you use the second method, every usage of list/vector/cout/etc will require you to put std:: in front of.
- Dev C Cout Does Not Name A Typeype
- Dev C Cout Does Not Name A Type One
- Dev C Cout Does Not Name A Type 2
- Dev C Cout Does Not Name A Type
- C++ Basics
- C++ Object Oriented
- C++ Advanced
- C++ Useful Resources
- Selected Reading
The C++ standard libraries provide an extensive set of input/output capabilities which we will see in subsequent chapters. This chapter will discuss very basic and most common I/O operations required for C++ programming.
C++ I/O occurs in streams, which are sequences of bytes. If bytes flow from a device like a keyboard, a disk drive, or a network connection etc. to main memory, this is called input operation and if bytes flow from main memory to a device like a display screen, a printer, a disk drive, or a network connection, etc., this is called output operation.
I/O Library Header Files
There are following header files important to C++ programs −
| Sr.No | Header File & Function and Description |
|---|---|
| 1 | <iostream> This file defines the cin, cout, cerr and clog objects, which correspond to the standard input stream, the standard output stream, the un-buffered standard error stream and the buffered standard error stream, respectively. |
| 2 | <iomanip> This file declares services useful for performing formatted I/O with so-called parameterized stream manipulators, such as setw and setprecision. |
| 3 | <fstream> This file declares services for user-controlled file processing. We will discuss about it in detail in File and Stream related chapter. |
The Standard Output Stream (cout)
The predefined object cout is an instance of ostream class. The cout object is said to be 'connected to' the standard output device, which usually is the display screen. The cout is used in conjunction with the stream insertion operator, which is written as << which are two less than signs as shown in the following example.
When the above code is compiled and executed, it produces the following result −
The C++ compiler also determines the data type of variable to be output and selects the appropriate stream insertion operator to display the value. The << operator is overloaded to output data items of built-in types integer, float, double, strings and pointer values.
The insertion operator << may be used more than once in a single statement as shown above and endl is used to add a new-line at the end of the line.
The Standard Input Stream (cin)
The predefined object cin is an instance of istream class. The cin object is said to be attached to the standard input device, which usually is the keyboard. The cin is used in conjunction with the stream extraction operator, which is written as >> which are two greater than signs as shown in the following example.
When the above code is compiled and executed, it will prompt you to enter a name. You enter a value and then hit enter to see the following result −
The C++ compiler also determines the data type of the entered value and selects the appropriate stream extraction operator to extract the value and store it in the given variables.
The stream extraction operator >> may be used more than once in a single statement. To request more than one datum you can use the following −
This will be equivalent to the following two statements −
The Standard Error Stream (cerr)
The predefined object cerr is an instance of ostream class. The cerr object is said to be attached to the standard error device, which is also a display screen but the object cerr is un-buffered and each stream insertion to cerr causes its output to appear immediately.
The cerr is also used in conjunction with the stream insertion operator as shown in the following example.
When the above code is compiled and executed, it produces the following result −
The Standard Log Stream (clog)
The predefined object clog is an instance of ostream class. The clog object is said to be attached to the standard error device, which is also a display screen but the object clog is buffered. This means that each insertion to clog could cause its output to be held in a buffer until the buffer is filled or until the buffer is flushed.
The clog is also used in conjunction with the stream insertion operator as shown in the following example.
When the above code is compiled and executed, it produces the following result −
You would not be able to see any difference in cout, cerr and clog with these small examples, but while writing and executing big programs the difference becomes obvious. So it is good practice to display error messages using cerr stream and while displaying other log messages then clog should be used.
Dev-C++ showing its updated UI and new variable browsing options | |
| Developer(s) | Bloodshed Software (Colin Laplace) until 2005, Orwell (Johan Mes) from 2011 to 2020, Embarcadero since 2020 |
|---|---|
| Stable release | |
| Repository | |
| Written in | Delphi |
| Operating system | Microsoft Windows, Linux (alpha only) |
| Type | Integrated development environment |
| License | GPL-2.0-or-later |
| Website | www.embarcadero.com/free-tools/dev-cpp orwelldevcpp.blogspot.com www.bloodshed.net |
Dev C Cout Does Not Name A Typeype
Dev-C++ is a free full-featured integrated development environment (IDE) distributed under the GNU General Public License for programming in C and C++. It was originally developed by Colin Laplace and first released in 1998. It is written in Delphi.
It is bundled with, and uses, the MinGW or TDM-GCC 64bit port of the GCC as its compiler. Dev-C++ can also be used in combination with Cygwin or any other GCC-based compiler.[1]
DevPaks[edit]
An additional aspect of Dev-C++ is its use of DevPaks: packaged extensions on the programming environment with additional libraries, templates, and utilities. DevPaks often contain, but are not limited to, GUI utilities, including popular toolkits such as GTK+, wxWidgets, and FLTK. Other DevPaks include libraries for more advanced function use. Users of Dev-C++ can download additional libraries, or packages of code that increase the scope and functionality of Dev-C++, such as graphics, compression, animation, sound support and many more. Users can create DevPaks and host them for free on the site. Also, they are not limited to use with Dev-C++ - the site says 'A typical devpak will work with any MinGW distribution (with any IDE for MinGW)'.
Development status[edit]
From February 22, 2005 the project was not noticeably active, with no news posted nor any updated versions released. In a 2006 forum post, lead developer Colin Laplace stated that he was busy with real-life issues and did not have time to continue development of Dev-C++.[2] In a 2020 forum post, Orwell lead developer Johan Mes stated that he 'will probably still not have any time to work on this project'.[3]
There are three forks of Dev-C++ since then: wxDev-C++, the Orwell version, and the Embarcadero-maintained fork version.
wxDev-C++ version[edit]
wxDev-C++ is a development team that has taken Dev-C++ and added new features such as support for multiple compilers and a RAD designer for wxWidgets applications.[4]
Orwell version[edit]
On June 30, 2011 an unofficial version 4.9.9.3 of Dev-C++ was released by Orwell (Johan Mes), an independent programmer,[5] featuring the more recent GCC 4.5.2 compiler, Windows' SDK resources (Win32 and D3D), numerous bugfixes, and improved stability. On August 27, after five years of officially being in a beta stage, version 5.0 was released.[6] This version also has its own separate SourceForge[7] page since version 5.0.0.5, because the old developer isn't responding to combining requests. In July 2014, Orwell Dev-C++ 5.7.1 was released featuring the then recent GCC 4.8.1 which supports C++11.
Embarcadero version[edit]
On July 1, 2020 a new fork version 5.50 of Dev-C++ was sponsored and released by Embarcadero featuring a code upgrade to Delphi 10.4. On October 12, 2020 a new fork version 6.0 of Dev-C++ was sponsored and released by Embarcadero with a more recent GCC 9.2.0 compiler with C++11 and partial C++20 support, new high DPI support, UTF8 file support, upgraded icons, dark theme, and additional changes.[8]
Dev C Cout Does Not Name A Type One
Notable uses[edit]
On May 4, 2015, The Singapore Prime Minister Lee Hsien Loong posted his Sudoku solver program in C++ on Facebook. In his screen shot, he's using Microsoft Windows and Dev-C++ as his IDE.[9]
Dev C Cout Does Not Name A Type 2
It is often recommended for beginners learning C or C++,[10][11][12][13][14][15] and is available on Wine.[16] It is compared with Turbo C++[17] or other IDEs.[18]
See also[edit]
References[edit]
- ^'Bloodshed Software - Providing Free Software to the internet community'. bloodshed.net. Retrieved 8 September 2015.
- ^'Dev-C++'. sourceforge.net. Retrieved 8 September 2015.
- ^'Orwell Dev-C++'. sourceforge.net. Retrieved 14 July 2020.
- ^[http://wxdsgn.sourceforge.net/?q=node/19
- ^Orwell. 'Dev-C++ Blog'. orwelldevcpp.blogspot.com. Retrieved 8 September 2015.
- ^Orwell. 'Dev-C++ Blog'. orwelldevcpp.blogspot.com. Retrieved 8 September 2015.
- ^orwelldevcpp. 'Dev-C++'. SourceForge. Retrieved 8 September 2015.
- ^Embarcadero. 'Embarcadero Dev-C++'. GitHub. Retrieved 12 October 2020.
- ^'Prime Minister of Singapore shares his C++ code for Sudoku solver'. Ars Technica. Retrieved 8 September 2015.
- ^https://www.evl.uic.edu/aspale/dvl/dev-cpp/
- ^https://chortle.ccsu.edu/bloodshed/howtogl.html
- ^http://www.brooklyn.cuny.edu/web/aca_naturalsciences_cis/STARTDev.pdf
- ^https://en.wikibooks.org/wiki/Programming_Fundamentals/Integrated_Development_Environment/Dev-C%2B%2B
- ^https://ece.uwaterloo.ca/~dwharder/aads/Tutorial/devcpp.html
- ^https://www.instructables.com/Your-First-Program-in-C-1/
- ^https://appdb.winehq.org/objectManager.php?sClass=version&iId=5960
- ^https://www.geeksforgeeks.org/difference-between-turbo-c-and-dev-c/
- ^https://www.reddit.com/r/cpp_questions/comments/5o7w29/pros_and_cons_dev_c_vs_codeblocks_vs_others/
Dev C Cout Does Not Name A Type
External links[edit]
- Official website
- Dev-C++ on SourceForge.net
- Orwell Dev-C++ on SourceForge.net
