Since this time, it has always been more impetuous. It is extremely low to work. It is basically not very much to work, and the program architecture needs some modifications, but because of impetuous mood, there is basically nothing. Similarly, under the influence of impetuous mood, the book recently intended to see, recall, personal progress is too slow, two years of progress in C is too small, solve the problem, analyze the problem It didn't get the corresponding improvement. Today, this blog only hopes that it can improve his own aspects, especially program design capabilities, so that this blog becomes the power of personal progress. I hope that in the next two years, individuals can make further learning and understanding for natural sciences, especially mathematical knowledge.