# Setting environment variables

You can set the environment variables and values to use when an application runs.

To set environment variables:

1. In the C/C++ Projects view, select a project.
2. Click Run > Run or Run > Debug.
3. In the Configurations box, expand C/C++ Local.
4. Select a run or debug configuration.
5. Click the Environment tab..
6. Do one of the following:
   - To create a new environment variable, click New.
   - To import an environment variable, click Import.
   - To edit an existing environment variable, select an item from the list and click Edit.
   - To remove an existing environment variable, select an item from the list and click Remove.
7. Type a name in the Name box.
8. Type a value in the Value box.
9. Click Run or do the following, as required:
   - To specify the execution arguments that an application uses and to specify the working directory for a run configuration, see Specifying execution arguments.
   - To select a debugger to use when debugging an application, see Selecting a debugger
   - To specify the location of source files used when debugging a C or C++ application, see Specifying the location of source files
   - To specify where the run configuration is stored, how you access it, and the perspective to open when running an application, see Specifying the location of the run configuration

C/C++ Projects
Project file views

Creating or editing a run configuration

Run and Debug dialog box