C语言预处理命令之条件编译,预处理过程扫描源代码，对其进行初步的转换，产生新的源代码提供给编译器.-C language preprocessor condition compilation, preprocessing scan source code, their initial conversion, to generate new source code available to the compiler.

自适应控制的简单程序，对于初学者有很大的帮助，大家共同学习，共同进步-In order to improve the adaptation property of the system by making the best of the direction of distribution of radar measurement errors, a optimum estimation algorithm for Kepler orbit is proposed, which yields a