Using Breakpoints & Watchpoint

Adding breakpoints

A breakpoint is set on an executable line of a program. If the breakpoint is enabled when you debug, the execution suspends before that line of code executes.

To add a breakpoint point, double click the marker bar located in the left margin of the C/C++ Editor beside the line of code where you want to add a breakpoint. A dot  is displayed in the marker bar and in the Breakpoints view, along with the name of the associated file.

Adding watchpoints

A watchpoint is a special breakpoint that stops the execution of an application whenever the value of a given expression changes, without specifying where it might occur. Unlike breakpoints (which are line-specific), watchpoints are associated with files. They take effect whenever a specified condition is true, regardless of when or where it occurred. You can set a watchpoint on a global variable by highlighting the variable in the editor.

To set a watchpoint on a global variable:

1. Highlight the variable in the editor.
2. Click Debug > Toggle Watchpoint
3. Do any of the following:

• To stop execution when the watch expression is read, select the Read check box
• To stop execution when the watch expression is written to, select the Write check box:

• 4. The watchpoint appears in the Breakpoints view list.