What is this library used for? #include<windows. h>

Answer 1

Windows header is enormous lol. I use to to manually set console text/background color, and even adjust the original colour table for extra colours. Sleep(), for example, delays console output based on specific ms. As @C0MPL3X pointed out, GetAsyncKeyState for really dank stuff. Much, much more.

Answer 2

Finally a person asked this :D I tried this once and you can use these stuff

if((GetAsyncKeyState == VK_UP) != 0) {
//When you click up button on your keyboard this function will work
}

I dunno about what other functions are (Google em) But windows.h is useful for console games =)