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Posted By admin On 22/08/21

What is Dev-C++?
Dev-C++, developed by Bloodshed Software, is a fully featured graphical IDE (Integrated Development Environment), which is able to create Windows or console-based C/C++ programs using the MinGW compiler system. MinGW (Minimalist GNU* for Windows) uses GCC (the GNU g++ compiler collection), which is essentially the same compiler system that is in Cygwin (the unix environment program for Windows) and most versions of Linux. There are, however, differences between Cygwin and MinGW; link to Differences between Cygwin and MinGW for more information.

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  • Dev- C 5.11 debug has stopped working while debug any program. If you try to debug standalone.c file then debug compiler will be crashed.
  • Mar 30, 2017 Learn how to debug your code using Dev C. Next, you'll create a launch.json file to configure VS Code to launch the Microsoft C debugger when you press F5 to debug the program. From the main menu, choose Run Add Configuration. And then choose C (Windows).

I'll be the first to say that the name Bloodshed won't give you warm and fuzzies, but I think it's best if the creator of Bloodshed explains:

First I would like to say that I am not a satanist, that I hate violence/war and that I don't like heavy metal / hard-rock music. I am french, but I do know the meaning of the 'Bloodshed' word, and I use this name because I think it sounds well. If you are offended by the name, I am very sorry but it would be a big mess to change the name now.

Debugging Dev C. Hi all, Im currently new to Dev C, and im stuggling a little. I am able to write and compile a win console C program, but i Dev-C Language File Repository This page aims to provide a centralized place for updating the different language files of Dev-C.

There's also a reason why I keep the Bloodshed name. I don't want people to think Bloodshed is a company, because it isn't. I'm just doing this to help people.

Here is a good remark on the Bloodshed name I received from JohnS:
I assumed that this was a reference to the time and effort it requires of you to make these nice software programs, a la 'Blood, Sweat and Tears'.

Peace and freedom,

Colin Laplace

Getting Dev-C++
The author has released Dev-C++ as free software (under GPL) but also offers a CD for purchase which can contain all Bloodshed software (it's customizable), including Dev-C++ with all updates/patches.

Link to Bloodshed Dev-C++ for a list of Dev-C++ download sites.

You should let the installer put Dev-C++ in the default directory of C:Dev-Cpp, as it will make it easier to later install add-ons or upgrades.

Using Dev-C++
This section is probably why you are here.

All programming done for CSCI-2025 will require separate compilation projects (i.e. class header file(s), class implementation file(s) and a main/application/client/driver file). This process is relatively easy as long as you know what Dev-C++ requires to do this. In this page you will be given instructions using the Project menu choice. In another handout you will be given instructions on how to manually compile, link and execute C++ files at the command prompt of a command window. See here.

Step 1: Configure Dev-C++.
We need to modify one of the default settings to allow you to use the debugger with your programs.

  • Go to the 'Tools' menu and select 'Compiler Options'.
  • In the 'Settings' tab, click on 'Linker' in the left panel, and change 'Generate debugging information' to 'Yes':
  • Click 'OK'.

Step 2: Create a new project.
A 'project' can be considered as a container that is used to store all the elements that are required to compile a program.

  • Go to the 'File' menu and select 'New', 'Project..'.
  • Choose 'Empty Project' and make sure 'C++ project' is selected.
    Here you will also give your project a name. You can give your project any valid filename, but keep in mind that the name of your project will also be the name of your final executable.
  • Once you have entered a name for your project, click 'OK'.
  • Dev-C++ will now ask you where to save your project.

Step 3: Create/add source file(s).
You can add empty source files one of two ways:

  • Go to the 'File' menu and select 'New Source File' (or just press CTRL+N) OR
  • Go to the 'Project' menu and select 'New File'.
    Note that Dev-C++ will not ask for a filename for any new source file until you attempt to:
    1. Compile
    2. Save the project
    3. Save the source file
    4. Exit Dev-C++

You can add pre-existing source files one of two ways:
  • Go to the 'Project' menu and select 'Add to Project' OR
  • Right-click on the project name in the left-hand panel and select 'Add to Project'.
EXAMPLE: Multiple source files
In this example, more than 3 files are required to compile the program; The 'driver.cpp' file references 'Deque.h' (which requires 'Deque.cpp') and 'Deque.cpp' references 'Queue.h' (which requires 'Queue.cpp').

Step 4: Compile.
Once you have entered all of your source code, you are ready to compile.

  • Go to the 'Execute' menu and select 'Compile' (or just press CTRL+F9).

    It is likely that you will get some kind of compiler or linker error the first time you attempt to compile a project. Syntax errors will be displayed in the 'Compiler' tab at the bottom of the screen. You can double-click on any error to take you to the place in the source code where it occurred. The 'Linker' tab will flash if there are any linker errors. Linker errors are generally the result of syntax errors not allowing one of the files to compile.

Once your project successfully compiles, the 'Compile Progress' dialog box will have a status of 'Done'. At this point, you may click 'CloseDebugWindoweverxx'. Dev

Step 5: Execute.
You can now run your program.

  • Go to the 'Execute' menu, choose 'Run'.
Note: to pass command-line parameters to your program, go to the 'Execute' menu, choose 'Parameters' and type in any paramaters you wish to pass.

Disappearing windows
If you execute your program (with or without parameters), you may notice something peculiar; a console window will pop up, flash some text and disappear. The problem is that, if directly executed, console program windows close after the program exits. You can solve this problem one of two ways:

  • Method 1 - Adding one library call:
    On the line before the main's return enter:
  • Method 2 - Scaffolding:
    Add the following code before any return statement in main() or any exit() or abort() statement (in any function):
    /* Scaffolding code for testing purposes */
    cin.ignore(256, 'n');
    cout << 'Press ENTER to continue..'<< endl;
    /* End Scaffolding */
    This will give you a chance to view any output before the program terminates and the window closes.
  • Method 3 - Command-prompt:
    Alternatively, instead of using Dev-C++ to invoke your program, you can just open an MS-DOS Prompt, go to the directory where your program was compiled (i.e. where you saved the project) and enter the program name (along with any parameters). The command-prompt window will not close when the program terminates.

For what it's worth, I use the command-line method.

Step 6: Debug.
When things aren't happening the way you planned, a source-level debugger can be a great tool in determining what really is going on. Dev-C++'s basic debugger functions are controlled via the 'Debug' tab at the bottom of the screen; more advanced functions are available in the 'Debug' menu.

Using the debugger:
The various features of the debugger are pretty obvious. Click the 'Run to cursor' icon to run your program and pause at the current source code cursor location; Click 'Next Step' to step through the code; Click 'Add Watch' to monitor variables.
Setting breakpoints is as easy as clicking in the black space next to the line in the source code.
See the Dev-C++ help topic 'Debugging Your Program' for more information.

Dev-C++ User F.A.Q.

Why do I keep getting errors about 'cout', 'cin', and 'endl' being undeclared?
It has to do with namespaces. You need to add the following line after the includes of your implementation (.cpp) files:

How do I use the C++ string class?
Again, it probably has to do with namespaces. First of all, make sure you '#include <string>' (not string.h). Next, make sure you add 'using namespace std;' after your includes.


That's it for now.
I am not a Dev-C++ expert by any means (in fact, I do not teach C++ nor use it on a regular basis), but if you have any questions, feel free to email me at [email protected]

Happy coding!


A service must be run from within the context of the Services Control Manager rather than from within Visual Studio. For this reason, debugging a service is not as straightforward as debugging other Visual Studio application types. To debug a service, you must start the service and then attach a debugger to the process in which it is running. You can then debug your application by using all of the standard debugging functionality of Visual Studio.


You should not attach to a process unless you know what the process is and understand the consequences of attaching to and possibly killing that process. For example, if you attach to the WinLogon process and then stop debugging, the system will halt because it can’t operate without WinLogon.

You can attach the debugger only to a running service. The attachment process interrupts the current functioning of your service; it doesn’t actually stop or pause the service's processing. That is, if your service is running when you begin debugging, it is still technically in the Started state as you debug it, but its processing has been suspended.

After attaching to the process, you can set breakpoints and use these to debug your code. Once you exit the dialog box you use to attach to the process, you are effectively in debug mode. You can use the Services Control Manager to start, stop, pause and continue your service, thus hitting the breakpoints you've set. You can later remove this dummy service after debugging is successful.

This article covers debugging a service that's running on the local computer, but you can also debug Windows Services that are running on a remote computer. See Remote Debugging.



Debugging the OnStart method can be difficult because the Services Control Manager imposes a 30-second limit on all attempts to start a service. For more information, see Troubleshooting: Debugging Windows Services.

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To get meaningful information for debugging, the Visual Studio debugger needs to find symbol files for the binaries that are being debugged. If you are debugging a service that you built in Visual Studio, the symbol files (.pdb files) are in the same folder as the executable or library, and the debugger loads them automatically. If you are debugging a service that you didn't build, you should first find symbols for the service and make sure they can be found by the debugger. See Specify Symbol (.pdb) and Source Files in the Visual Studio Debugger. If you're debugging a system process or want to have symbols for system calls in your services, you should add the Microsoft Symbol Servers. See Debugging Symbols.

To debug a service

  1. Build your service in the Debug configuration.

  2. Install your service. For more information, see How to: Install and Uninstall Services.

  3. Start your service, either from Services Control Manager, Server Explorer, or from code. For more information, see How to: Start Services.

  4. Start Visual Studio with administrative credentials so you can attach to system processes.

  5. (Optional) On the Visual Studio menu bar, choose Tools, Options. In the Options dialog box, choose Debugging, Symbols, select the Microsoft Symbol Servers check box, and then choose the OK button.

  6. On the menu bar, choose Attach to Process from the Debug or Tools menu. (Keyboard: Ctrl+Alt+P)

    The Processes dialog box appears.

  7. Select the Show processes from all users check box.

  8. In the Available Processes section, choose the process for your service, and then choose Attach.


    The process will have the same name as the executable file for your service.

    The Attach to Process dialog box appears.

  9. Choose the appropriate options, and then choose OK to close the dialog box.

  10. Set any breakpoints you want to use in your code.

  11. Access the Services Control Manager and manipulate your service, sending stop, pause, and continue commands to hit your breakpoints. For more information about running the Services Control Manager, see How to: Start Services. Also, see Troubleshooting: Debugging Windows Services.

Debugging Tips for Windows Services

Attaching to the service's process allows you to debug most, but not all, the code for that service. For example, because the service has already been started, you cannot debug the code in the service's OnStart method or the code in the Main method that is used to load the service this way. One way to work around this limitation is to create a temporary second service in your service application that exists only to aid in debugging. You can install both services, and then start this dummy service to load the service process. Once the temporary service has started the process, you can use the Debug menu in Visual Studio to attach to the service process.

Try adding calls to the Sleep method to delay action until you’re able to attach to the process.

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Try changing the program to a regular console application. To do this, rewrite the Main method as follows so it can run both as a Windows Service and as a console application, depending on how it's started.

How to: Run a Windows Service as a console application

  1. Add a method to your service that runs the OnStart and OnStop methods:

  2. Rewrite the Main method as follows:

  3. In the Application tab of the project's properties, set the Output type to Console Application.

  4. Choose Start Debugging (F5).

  5. To run the program as a Windows Service again, install it and start it as usual for a Windows Service. It's not necessary to reverse these changes.

In some cases, such as when you want to debug an issue that occurs only on system startup, you have to use the Windows debugger. Download the Windows Driver Kit (WDK) and see How to debug Windows Services.

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See also