thanks, thanks for the advice. i will check this. I used Xcode when I was coding with C,C++ but after have seen that Xcode use a lot of space (I was more then 20 GO) and i don't use C and C++ a lot l have deleted to have more space but after deleted Xcode I didn't find all my 20 GO in the free space

ok thank u next time i will do it correctly. I used Xcode but after seeing that it use more then 20 GO and i didn't have space i deleted , but after i didn't find my 20 go.

sorry I have just dropped the image I thought it's work like the other website. the total capacity is 128 GO, and I deleted everythings except some applications that I need.