多重回滚操作的实现

这是一个内存分配管理程序。在一些实时通讯系统中，需要经常分配和释放内存，会造成较多的内存碎片。这个程序可以在一开始分配一大片内存，从而避免频繁申请和释放内存。大大提高程序的执行效率。-This is a memory allocation management procedures. In some real-time communication systems, the need for frequent distribution and release memory, the memory caused more debris. This procedure can be started in an allocation of a large memory, thus avoiding the frequent application and release memory. The process greatly enhanced the efficiency of enforcement.

一个模仿windows的计算器。 只包含普通型计算器。未包含科学性-A mimic windows calculator. Contains only general-type calculator. Does not contain scientific

用c写的18b20驱动程序 功能：实现对DS18B20的读取 原理：单总线协议 注意：单总线协议对延时要求比较严格，此程序中采用的是11.0592M的晶振，如果使用其他的晶振请跟据DS18B20的资料修改延时参数-used to write the 18b20 driver function : to achieve DS18B20 read Principle : single-bus protocol attention : single-bus protocol to delay requirements more stringent, this procedure is used in the crystal 11.0592M if the use of other crystal please According to the information DS18B20 delay parameter changes

学习VC＋＋写的一个例子，适合初学者参考，代码不是很复杂，但是确实是一步一步写的。-learning VC++ to write an example for beginners reference code is not very complicated. But step by step, is written.

举例介绍如何动态生成windows窗体！-how to create windows dynamicly

a particular type or format of ppt,esp. for tables.

仿windows的画板程序 适合初学者使用-imitation windows slate procedures for beginners

一个课程设计的万年日历 按下指定的键操作,可以显示从1900年到以后的各月的日历-a curriculum design calendar years pressing specific keys operation can show from 1900 to a future on the calendar

此算术表达式能够在程序运行时根据输入的变量大小和算术表达式动态解析表达式，得到运算结果。支持多项算术运算符和数学函数如下：: + - * / ^ ( ) mod abs, atan, cos, exp, ln, round, sin, sqrt, sqr, trunc 例如设定a1和a2的大小，就可计算下列表达式: exp(sin(a1)*cos(a2))操作系统： Visual C++语言 -this arithmetic expression in accordance with the procedures in the importation of variable size and arithmetic expressions dynamic analytical expression to be Operational results. Support for a number of arithmetic operations and mathematical functions are as follows : :-*/^ () mod abs, atan, cos, exp, ln, round, sin, sqrt, sqr, for example, to set trunc a1 and a2 the size, can be calculated by the following formula : exp ( sin (a1)* cos (a2)) Operating System : Visual C language