Debug MFDEMO

Debugging requires that your project is associated with the IMSDEMO enterprise server and that IMSDEMO is configured to use dynamic debugging. Both of these requirements were met earlier in this tutorial.

Set Breakpoints

In the Solution Explorer, if not already set, set the IMSTutorial project as the startup project.
Double-click the DEMO001T.cbl file to start the COBOL editor.
Scroll down to line number 551 and set a breakpoint. The code on line 551 is:
```
 IF DEMO91-FUNCTION = 'I' OR 'i'
```
Note:
- To enable line numbers in the editor, click Tools > Options, expand Text Editors > Micro Focus COBOL. On the General page, check Line numbers and click OK.
- To set a breakpoint, on the line of code where you want to break, put your cursor in the far left column and double-click.
Click File > Save to save DEMO001T.cbl.

Start Debugging

From the main menu, click DEBUG > Start Debugging.
Note: If at any time the Rumba embedded display is not visible, click (Mainframe TN3270 Display) on the Enterprise Developer toolbar.

Enterprise Developer:
- Builds the project.
- If stopped, starts the IMSDEMO enterprise server region. If prompted, click OK.
- Starts your terminal emulator.
In the terminal emulator, log into IMS and start MFDEMO just as you did to run the MFDEMO application as described in the previous topic.
In Enterprise Developer, the debugger shows the current line of code execution:
On the Enterprise Developer toolbar, click Continue.
This transfers control back to the terminal emulator and advances the application to its main menu.
On the main menu in the terminal emulator, type I into the FUNCTION CODE field to select the <I>NQUIRE function.
This action advances your cursor to the TABLE-ID field.
In the TABLE-ID field, type TESTDEPT; then press Enter.
The application advances to the details screen and shows the contents of the TESTDEPT table.
On the Enterprise Developer toolbar, click Continue.
The debugger advances to your breakpoint. From here you can continue debugging if desired. When you have finished, continue with the next step from whatever screen you are on.
Tab to the RETURN field.
Type X; then press Enter.
On the main menu, type E into the FUNCTION CODE field; then press Enter.
This action takes you to the TRANCODE - MFDEMO - ENDED screen.

Stop Debugging

From the Rumba Mainframe TN3270 Display toolbar, click (Disconnect); then close Rumba.
In Enterprise Developer, click DEBUG > Stop Debugging.