# 5、系统库 * [Problem01：多线程维护最大值](chapter05/problem01.md) * [Problem02：介绍一下strcpy、strncpy、memcpy、memmove](chapter05/problem02.md) * [Problem03：介绍一下网络编程](chapter05/problem03.md) * [Problem04：select、poll、epoll的区别](chapter05/problem04.md)