Viewing Variables in the Local Variables View
First, we’ll add a breakpoint so the program will stop execution and we can view data.
1. Set a breakpoint.
Navigate to the word “evaluate” on line 32, in main(), to open evalexpr.c. Set a breakpoint on line 15 inside the evaluate() function at the assignment statement.
NOTE: Disable any other breakpoints you have set, for this discussion.
Click Go (
) on the toolbar. The program stops on the breakpoint.Now let’s view some data.
2. View variables in the Local Variables view
The Local Variables view lists local variables. To view compound variables, click the left arrow. 
The Info view displays additional detail about the location of the stopped thread and the selected frame in the stack trace.
3. View variables in a tooltip
In the Source pane or the Local Variables view, hover over the variable result to view a tool tip that displays its value:
