C#获取子串
usingSystem;namespaceStringApplication{classStringProg{staticvoidMain(string[]args){stringstr="LastnightIdreamtofSa
usingSystem;namespaceStringApplication{classStringProg{staticvoidMain(string[]args){stringstr="LastnightIdreamtofSa
usingSystem;classDemo{staticvoidMain(){stringstr="xyz";for(inti=1;i<str.Length;i++){for(intstart=0;start<
usingSystem;namespaceCalculatorApplication{classNullablesAtShow{staticvoidMain(string[]args){double?num1=null;double?num
usingSystem;namespaceRectangleApplication{classRectangle{//membervariablesdoublelength;doublewidth;publicvoidAcceptdetai
usingSystem;classDemo{staticStringMyApplication(Stringstr){char[]val=str.ToCharArray();for(inti=0;i<str.Length;i++){i
usingSystem;usingSystem.IO;namespaceFileApplication{classProgram{staticvoidMain(string[]args){string[]names=newstring[]{
usingSystem;usingSystem.Collections.Generic;usingSystem.Text;namespaceDemo{classtoBinary{staticvoidMain(string[]args){in
usingSystem;namespaceyiibai{classStudent{privatestringcode="N.A";privatestringname="notknown";privat
usingSystem;delegateintNumberChanger(intn);namespaceDelegateAppl{classTestDelegate{staticintnum=10;publicstaticintAddNum
usingSystem;namespaceEnumApplication{classEnumProgram{enumDays{Sun,Mon,tue,Wed,thu,Fri,Sat};staticvoidMain(string[]args)
usingSystem;namespaceBoxApplication{classBox{publicdoublelength;//Lengthofaboxpublicdoublebreadth;//Breadthofaboxpublicd
usingSystem;namespaceCalculatorApplication{classNumberManipulator{publicintfactorial(intnum){/*localvariabledeclaration*
usingSystem;namespaceBubbleSort{classMySort{staticvoidMain(string[]args){int[]arr={78,55,45,98,13};inttemp;for(intj=0;j&