c语言若干个经典的程序案例，包括菲比那切数列问题，鸡兔同笼问题，素数问题，闰年问题，水仙花数问题，完数问题-c language a number of cases of classic program, including Phoebe that cut the number of columns of the problem, chickens and rabbits with cage problem, prime numbers, the leap year problem, daffo