程序提出了一种基于人群混合算法，是粒子群优化和引力搜索算法的组合。主要目标提高整合PSO和GSA算法的能力-Hybrid Particle Swarm Optimization and Gravitational Search Algorithm (PSOGSA) A new hybrid population-based algorithm (PSOGSA) is proposed with the combination of Particle Swarm Optimization

绘制简易的时钟，适用于初学C++人群，代码简易通俗(Draw a simple clock.It is suitable for beginners C++ crowd and the code is simple popular.)