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前言函数指针及回调函数这块一直想深入研究研究，这次看完C++的继承及多态看到书上写到c语言的多态，很是惊奇，c语言中还有多态？遂研究了一下。
函数类型基础语法函数基础概念
数组类型基本语法梳理：
数组类型的定义（1）
int a[10];//a代表的是数组首地址，更准确说是a代表数组首元素地址，&a代表的是整个数组的地址，a+1步长4和&a+1步长4*10=40
(2)定义一个数组类型的方法
typedef int (myTypeArray)[10];//自己定义一个数组类型，同（1）中定义相同myTypedefAr
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前言C++继承（应该是多态）这个位置总有些遗忘，再次看看。（20190112）抽象、封装、继承和多态性：
封装：突破了C语言函数的概念，当将一个类作函数参数时能将一个对象传递给函数并且在函数中能访问该对象的属性和方法；
继承：继承能够复用前人写的代码；
多态：不仅能复用前人写的代码而且能够复用后来人写的代码（能向后扩展）。例如：80年代写了一个框架···90人写的代码···。
继承
派生类继承了基类的全部成员变量和成员方法（除了构造和析构之外的成员方法），但是这些成员的访问属性，在派生过程中是可以调整的。
继承方式及子类对外访问属性
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前言WPF基础XAML初识
xaml背景渐变
方法一：直接XAML编辑123456789<Grid.Background> <LinearGradientBrush> <LinearGradientBrush.GradientStops> <GradientStop Offset="0.00" Color="Red"/> <GradientStop Offset="0.50" Color="Indigo"/> <GradientStop
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前言C#基础语法学习3。(20190111)
C#中的字符串
创建字符串
System.String(string是这个类的别名)System.Text.StringBuilder
System.String类
(1)创建字符串 string s = “www.devsiki.com";(2)获取字符串长度 s.Length(属性)(3)比较字符串是否一样 s==”www.devsiki.com"(4)字符串连接 s=”http://“+s;(5)使用类似索引器的语法来取得字符串中的某个字符 stringName[ind
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