Notes on Command Line Arguments in Eclipse

SE 2040 Notes on Using Command Line Arguments in Eclipse

At times you need to specify

Click on the project and select Run Configurations... from the Run menu.
Select C/C++ Application and click on the icon to create a new configuration.
Click on the Arguments tab and enter the argument such as
```
        myfile.xyz
```
Rename the configuration to something like "use myfile" so that you can keep it separate from other configurations.
Select the Common tab and check the entries for Debug and Run in the Display in favorites menu box.
Select Apply and then close the configuration manager.

You can then select the new run configuration from the dropdowns next to the debug and run icons

Eclipse says it cannot access the executable: it's probably still running from a previous debugging session. Try opening the task manager, clicking on the Processes tab, and find the executable on the list. Right click on it and select End Process Tree.
The application has no compilation errors but you get an error like "Function 'stoi' could not be resolved". Do the following:
1. Browse to the Debug folder and delete the executable.
2. In Eclipse, select Project|Clean... and clean the project.
3. Select Project|Build Project
  You will still get errors about the unresolved symbols, but Eclipse will build the system anyways!
4. Open a command prompt in the Debug folder.
5. Run your executable from the command prompt.
Apparently Eclipse is lying about building your project.