背包问题c算法实现，利用回溯法实现的背包问题详解，内附源代码即详细注解，以及一些优化的思想，很容易理解，是一个很好的算法，通过调试，可以运行。-knapsack problem c algorithm, using the retrospective method to achieve Hi knapsack problem, the source code that contains detailed notes, and some optimization thinking, it is easy to understand, is a good method, and testing can run.