C#检查数字是否为素数
usingSystem;namespaceDemo{classMyApplication{publicstaticvoidMain(){intn=5,a=0;for(inti=1;i<=n;i++){if(n%i==0){a++;}}
C#进阶
C#类静态成员
usingSystem;namespaceStaticVarApplication{classStaticVar{publicstaticintnum;publicvoidcount(){num++;}publicintgetNum(){r
C#正则表达式示例2
usingSystem;usingSystem.Text.RegularExpressions;namespaceRegExApplication{classProgram{privatestaticvoidshowMatch(string
C#多重继承
usingSystem;namespaceInheritanceApplication{classShape{publicvoidsetWidth(intw){width=w;}publicvoidsetHeight(inth){heigh
C#位运算和位移运算符
usingSystem;namespaceMyApplication{classProgram{staticvoidMain(string[]args){inta=60;/*60=00111100*/intb=13;/*13=0000110
C#用户定义的异常
usingSystem;namespaceUserDefinedException{classTestTemperature{staticvoidMain(string[]args){Temperaturetemp=newTemperatu
C#计算每个字符的出现次数
usingSystem;publicclassDemo{publicstaticvoidMain(){stringstr="Website";Console.WriteLine("String:"+s
C#检查字符串中的URL
usingSystem;classDemo{staticvoidMain(){stringinput="https://example.com/new.html";//Seeifinputmatchesoneofthes
C#使用递归计算数字的和
usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingSystem.Text;namespaceDemo{classMyApplication{staticvoi
C#多级继承
usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingSystem.Text;namespaceDemo{classSon:Father{publicvoidDi
C#执行基本算术运算
usingSystem;namespaceSample{classDemo{staticvoidMain(string[]args){intnum1=50;intnum2=25;intresult;result=num1+num2;Cons
C#类型转换
usingSystem;namespaceTypeConversionApplication{classExplicitConversion{staticvoidMain(string[]args){doubled=5673.74;inti
C#泛型委托
usingSystem;usingSystem.Collections.Generic;delegateTNumberChanger<T>(Tn);namespaceGenericDelegateAppl{classTestDe
C#检查两个矩阵是否相同
usingSystem;namespaceDemo{publicclassApplicationOne{publicstaticvoidMain(){int[,]arr1=newint[10,10];int[,]arr2=newint[10
C#析构函数
usingSystem;namespaceLineApplication{classLine{privatedoublelength;//LengthofalinepublicLine(){//constructorConsole.Writ
C#定义常量
usingSystem;namespaceDeclaringConstants{classProgram{staticvoidMain(string[]args){constdoublepi=3.14159;//constantdeclar
C#数组作为函数参数
usingSystem;namespaceArrayApplication{classMyArray{doublegetAverage(int[]arr,intsize){inti;doubleavg;intsum=0;for(i=0;i&
C#计算字符串中的单词数
usingSystem;publicclassDemo{publicstaticvoidMain(){inta=0,myWord=1;stringstr="HelloWorld!";while(a<=str.Len
C#数据类型
usingSystem;namespaceDataTypeApplication{classProgram{staticvoidMain(string[]args){Console.WriteLine("Sizeofint:{0}
C#检查给定字符串中是否存在某子字符串
usingSystem;publicclassDemo{publicstaticvoidMain(){stringstr1="United",str2="Uni";boolres;res=str1.C