怎样判断一个指针指向的对象是否已经被析构，很好的学习C++的资料...

图的建立和图的广度深度优先遍历（有向图和无向图）-Map creation and map the breadth of depth-first traversal (with the map and undirected graph)

ACCESS VBA编写的报表生成向导源代码，很不错的-ACCESS VBA statements prepared Wizard source code, very good

算符有限分析法 //程序功能： //根据算符优先分析法，将表达式进行语法分析，判断一个表达式是否正确。 //文法：E→E+E E-E E*E E/E (E) i // 其中i为无符号整数-operator limited analysis// procedural functions :// operator under priority analysis, to conduct regular expression syntax analysis, judgment, an expression is correct.// Grammar : E E E E-E E E* E/E (E) i// for which i unsigned integers

可以求一个矩阵的鞍点（即矩阵中最大的企业指出最小的点）

This a simple database management system. It doesn t use any other code (i.e. ODBC, ADO, etc.) and has it s own database file format. I wrote it because I found the other DBMSs code too bulky and hard to debug. It s designed for small applications and I doubt it could handle anything on a large scale. A sample program included in the .zip shows how everything works. The database project is a library project, so you ll have to compile and link with the .lib file to get everything working. Pros: - You have the source code so you know exactly what it is doing - Database files are very small - Small and fast code Cons: - Can t handle large amounts of records (more than 65000ish) - Doesn t support SQL (you have to search the database by cycling through the records and testing them against your constraints) - Each database file can only have one table. -This a simple database management system. It doesn t use any other code (i.e. ODBC, ADO, etc.) and has it s own database file format. I wr

很好用的c 注：前两个文件存储为m文件并放在工作目录下，运行结果为 p = 0.0000 -0.0000 0.0055 大家可以直接绘出f(x)的图形来大概看看f（x）的最值是多少，也可是使用优化函数来验证。matlab命令行执行命令： fplot("x+10*sin(5*x)+7*cos(4*x)",[0,9]) evalops是传递给适应度函数的参数，opts是二进制编码的精度，termops是选择maxGenTerm结束函数时传递个maxGenTerm的参数，即遗传代数。xoverops是传递给交叉函数的参数。mutops是传递给变异函数的参数。

界面直观，功能齐全量不要让站长把时间都花费在为您修正说明上。压缩包解压时不能有密码-量不要让站长把时间都花费在为您修正说明上。压缩包解压时不能有密码

快速报告3之后安装FastReport®是一个附加组件，它允许您的应用程序快速有效地产生报表。 FastReport®提供了所有必要的发展报告，其中包括一个可视化的报表设计器，报告的核心，和预览窗口的工具。

用C语言实现的算法题中的加油问题。 用贪心算法实现的。-C language algorithms that the refueling problem. With the greedy algorithm.

文件管理系统1.0Bjsp-document management system 1.0Bjsp