[TKC]Symantic i've followed your advice with some c trainer source and saw that all that i've learned all these 5 years is too little to start reading these codes.I don't know many of the libraries with which they are working so i don't know some functions which seem very important,from today on i'll start learning the most that i can,i don't have so much time now because i have competitions (those olimpics) at chemistry,physics and math so i'm really busy preparing for this,but thank for the tip