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http://go.microsoft.com/fwlink/?LinkId=192891-regrasdeconvencaodenome

typesfety--valoressaosempredotipoapropriado

builtinshort16byte8int324long648float324decimal12816double648bool8stringObjectchar162

examplesdecalreingvariablestringi;stringi,j;sringi=newstring();

assignvaluestring="5";

inti=4;

c#doesnotallowtouseunassignedvariable--

implicittypedvariableconceitosdeaplicadoDynamics

vara=4;(internamenteoC#definedeacordocomovalordefinido)

variablescope

foursituations

procedurescopevoidteste{inta=5...}blockscopeif(a==5){intb=6..}classscopeclassCar{privateintqtde;}namespacescopenamespaceT{classT{..}classX{..}}

convertavaluediferentDataTypeimplicityconversion-AutomaticallyperfomedCLRwithoutlosinginformationexplicitconversion-requiresyouwritetocodetoperformaconversioncanbe

loseinformationorproduceanerror

sbyte-short,int,long,float,double,dercimalbyte-short,int,long,float,double,dercimal,ushort,uint,ulongshort-int->ushort-inte..eosuint,ulongint->longe...unit->longe..eoulongfloat->doublelong,ulong->float,double,decimal

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char->menosobyte(chartemdezesseisbytes)

conversionquetemalgumarelacaointerface,heranca,tipomaiorpramenor(longint)

useinta=(int)long1;roundbrackets()naoseiporqueparenthesis

anothertypeofconvertionusingSystem.Convert1-Convert.ToInt32("444");

2-inti;if(int.TryParse("5436",outi))-themethodassignedthetypeiwhenconditionistrue.

readonly-constants

examplesreadonlystringcurrentDate;or

readonlystringcurrentDate=DateTime.Now.ToString();

constdoublePI=3.1415(jasaberovalor)

readonlycanbedeclaringeinitializinafterinconstructorclasscontonlyinitializedwhenitisdeclared.

usingexpressionsoperandarevaluesOperatoesdefineoperationtoperformonoperands

becarefullbecausethereisaconversionthatoccuredfirst1+5.05/2returnonlyinteger5.0/2convert2todouble

arithmeticincrementcomparisonstringlogical&|^!~&&casting()assigment=,+,+tyoeinformationsizeoftypeofdelegateconcatenationoverflowchecked,uncheckedindirectionconditional?:TERNARY

answer=answer+1;BINARYanswer++;UNARY

answer=answer+42;answer+=42;

orderprecedenceprefixes++,--,+,-(UNARY)-6,+5,!,~

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*,/,%+,-,>=

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case2:default:

}

havecommandsgoto0:andreturn:case50:Console.WriteLine("valorMaiorque50");gotocase30;case40:Console.WriteLine("valorMaiorque40");break;case30:

useaswitchstatementtoperformanactionbasedonthepossiblevaluesofasinglevariable

if/elseif/else->involveseveralvariablesif->involveseveralvariables

UsingITeraionStatements

WHILE-enablesexecute0ormoretimesdo-enablesexecuteoneormoretimesfor-enablesrepetedlyasetnumberoftimes

while(a==5){

}

do{

}while(a==5)

for([countervariable]=[startingvalue];[limit];[countermodification]){

}

i++i+=2i--

201pareibreakandcontineu

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