*How to start debugging

The following sequence may guides you start to debug on the visual Studio.

# put breakpoints where you want to take a look by hitting the key F9 in the line or left-click at the front of a line

## Shit +F11 to get out of a subroutine (Step Out)

## F9 to put/remove breakpoints in a line

(To open windows you need for debugging on Visual Studio, You must run a program in debug mode first)

[[File:debug_windows.png|400px|thumb|left|Menu Debug > Windows on VS 2015]]

<table border="0" width="800">

<tr align="left"><td>[[File:dataflow.png|220px|thumb|left|Quick sorting dataflow]]</td>

Fist set of this quick sorting is that main thread worked for first half of all elements which starts *begin 9 to *end 1. The *mid value was 9 so it swapped *mid for *end. Since mid moved to end, the second half of all elements was the end to the end which only end value are to be sorted; the actual process will be skipped so no value is changed.