k-means C++ 源代码，

修正原来的错误，

增加的新功能

1、用vector实现其存储

2、直接在程序中读取数据集

3、结果可以保存到文件中

4、用户可以输入聚类个数

5、初始聚类中心随机选择(代码自动随机)-k-means C++ source code, fixes the original error, the increase in new features 1, 2, with the vector to achieve its store directly in the program to read data set 3, the results can be saved to a file 4, the user can enter the number of clusters 5, the initial cluster centers randomly selected (code auto-random)