Can't find the button to compile the code.

Hi all.
I wrote code in C++, I decided to build it, but can’t find the button to compile, and if using Visual Studio 2013, it will generate an error.

In VS it’s F7 button.
What version of UE you use? If 4.9+, you need VS2015(you can use VS2013 but must get source from git and build engine by hand)

I have this Unreal Engine 4.7.6.