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ree(void *p)函数是用来释放程序动态申请的内存。其参数是个指针类型。在C当中，只有当使用了动态内存申请函数malloc calloc realloc申请内存之后，才可以使用free来释放之。释放之后就不能再使用了。(ree (void* p) function is used to release the program dynamically allocated memory. Its argument is a pointer type. In C, only apply when using the dynamic memory functions malloc calloc realloc application memory before you can use free to release it. After release no longer use.)

钱能C++程序设计教程第二版课后答案，经典书籍，包括完整的源代码(Money to C++ programming tutorial answer the second edition after-school, classic books, including full source code)

Visual Studio 2008 实现crc校验方式(Visual Studio 2008 crc check)

本ping程序实现了ping.exe的基本功能，并且使用了ip报文中记录路由的字段，实现了路由记录功能，并附详细的说明文档。-the ping program of the basic functions of privileges, and the use of the ip packet routing record fields, achieving record routing function, together with detailed documentation.

里面主要是JAVA开发的一个企业内部通讯软件，的源码-Which is mainly the development of a JAVA enterprise communications software, source code

硬件的相关操作的一些信息，希望对大家有所帮助(Hardware to operate some of the relevant information, and they hope to help everyone)

这是瑞雷波正演模拟程序，时间2阶空间4阶，采用自由地表边界条件，可以直接运行。(This is the Swiss Leibo forward simulation program, the 2 order of time space 4, the use of free surface boundary conditions, you can directly run.)

输入空气温度，相对湿度，平均辐射温度，衣服热阻，新陈代谢率之后可以轻松计算PMV-PPD(Enter the air temperature, relative humidity, mean radiant temperature, clothing thermal resistance, metabolic rate can then be easily calculated PMV-PPD)

说明：  完全平方数代码，并且其中的两个字母相同，这是window代码(Full square code, and one of the two letters the same, this is the code window)

超声相控阵探伤设备软件系统设计与实现,超声成像中的常用算法，相控聚焦，合成孔径成像(ultrasound image)