I have install dev c++ but i can't open it.. anyone know why??

Question

c++.. can't open it in window

Answer 1

where did you install it from?
I recommend a reliable source filehippo
http://filehippo.com/download_dev-c/
just open the following link on your computer browser and download it.
ps. this site automatically presents you with a version supportable on your system

lastly if there is any other kind of error it shows then I would like to see its screenshot.

hope this helps