Hello everyone! I just finished Mosh’s C++ course recently and started his DSA course part 1 (35% so far! 
). Since I won’t be using a command line tool so much in the real world in the future, I want to start by practice making desktop applications. The project that I want to work on while taking DSA is a calculator for many formulas in math. To start this project, I need a free and reliable GUI to make the calculator. The GUI also has to have a pretty big community or I won’t find tutorials. I tried searching online (it shows paid stuff and their websites look untrusty) and I searched on youtube (their videos either have a lot of steps to setup one simple thing or they use a GUI that is paid). Please provide any suggestions for a good, reliable and free GUI. Again, please and thank you 
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In case people are wondering what a GUI is 
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The website above just talks about what it gives us and how we can use it.