To add a breakpoint to the program, double-click the margin of the necessary line in the code editor:
You can also add breakpoints from the context menu of the code editor - by clicking Toggle Breakpoint:
After that, the breakpoint will appear in the margin of the selected line.
In the Breakpoint View, you can add Line, Function and Event breakpoints for C/C++ programs from the Breakpoints view drop-down menu:
Read more about these options here.
To remove a breakpoint in the code editor, double-click it or chose Toggle Breakpoint in the context menu:
You can also remove one, several, or all breakpoints in the Breakpoint view by pressing the buttons Remove Selected Breakpoints 
or Remove All Breakpoints 
:
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