这是c++中求快乐数的一个算法，简单易懂，感兴趣的可以-This is an algorithm c++ seek happy number, easy to understand, are interested can look at

it is a useful program to calculate semblance in seismic data and perhaps is best one .and this code is tested and be work well and u try it too and it code is use for geophysics data and real field data and i am so happy that i used it ,and thank

STAY HAPPY, STAY HEALTHY, GOOD LUCK