How see how much memory are used for

Right click on Project and select Options.

Click on Linker under Category

Click on List tab.

Check the box "Generate linker listing"

Click OK

Compile your project.

Now, expand your project and you should see your C file with an Output folder. Expand that Output folder.

Double click on .map file and scroll to the bottom of it. It should tell you how much code size is your program.