CPEN 223 – FINAL Questions and Answers Updated 2023

CPEN 223 – FINAL Questions and
Answers Updated 2023
3BC'sBforB"goodBSoftware"B-BAnswer-BCorrectB(safeBfromBbugs)

-BComprehensibleB(easyBtoBunderstand)

-BChangeableB(readyBtoBchange)



StaticBCheckingB-BAnswerTheBcheckingBthatBisBdoneBatBcompilation.

-BBugBautomaticallyBfoundBbeforeBprogramBruns



DynamicBCheckingB-BAnswerTheBcheckingBthatBisBdoneBatBrunBtime.

-BFoundBautomatically



BenefitsBofBC#B-BAnswer-Safety

B>BTypeBsafe,BstaticBchecking,BexceptionBhandling,Betc

-BUbiquity

B>BMultiplatform:BMobile,BWeb,BWindows/Mac/Linux

-BElegance

-BPopular

-BPowerful

-BHigh-level

-BModernBobjectBoriented



IssuesBwithBC#B-BAnswer-BVerbose:BtakesBaBlotBofBcodeBtoBdoBsimpleBtask

-BLarge:BmanyBfeatures



staticBvoidBMain()B-BAnswerTheBstartingBplaceBofBaBprogram



intBvarNameB=B92;B-BAnswerDeclaringBanBintBtypeBvariable



doubleBVarNameB=B1.45;B-BAnswerDeclaringBaBdoubleBtypeBvariable

,charBvarNameB=B'*';B-BAnswerDeclaringBaBcharBtypeBvariable



TwoBcategoriesBofBC#BtypesB-BAnswer-BValueBtypes

-BReferenceBtypes



C#BoperatorsB-BAnswer-BarithmeticB(B+,B-,B/,B%B(remainder),B*)

-BcomparisonB(==,B!=,B>,B>=,B...)

-BconditionalB(&&,B||,B!)



C#BselectionBstatementsB-BAnswer-Bif(condition)

-BelseBif(condition)

-BswitchB*anBalternativeBtoBif-elseBstatements



C#BrepetitionBstatementsB-BAnswer-Bwhile

-Bfor

-Bdo-while



ClassB-BAnswerTheBmostBimportantBuserBdefinedBtype

-BContainsBtwoBtypesBofBmembers;

>BDataBmembersB(fields,B..)BthatBstoreBtheBdataBwithinBtheB______.

>BFunctionBmembersB(methods,Bconstructors,B...)BthatBperformBoperationsBonBtheBdata



MethodsB-BAnswerABblockBofBcodeBthatBcontainsBaBseriesBofBstatements.



ArraysB-BAnswerstoresBaBfixed-sizeBcollectionBofBelements



HowBtoBinitializeBanBarrayB-BAnswerint[]BnameOfVariableB=BnewBint[5];

-BTheBsizeBofBtheB______BisB5.

intB[]BnameOfVariableB=BnewBint[]B{1,B2,B3,B4,B5};

intB[]BnameOfVariableB=B{1,B2,B3,B4,B5};

,WhatBisBaBDataBType?B-
BAnswerAB_____BisBaBsetBofBvaluesBandBtheBoperationsBthatBareBpermittedBonBtheBvalues



ValueBpre-definedBtypesB-BAnswer-Bint

-Blong

-BdoubleB

-Bchar

-Buint

-Bbool

-Bdecimal

-Bbool

-Bbyte

-Bsbyte

-Bfloat

-Buint

-Bshort

-Bushort



ReferenceBpre-definedBtypesB-BAnswer-Bobject

-Bstring

-Bdynamic



ABvalueBtypeB-
BAnswerThisBtypeBneedsBonlyBoneBallocatedBmemoryBspaceBthatBstoresBtheBactualBdata.



ABreferenceBtypeB-
BAnswerThisBtypeBstoresBtheB*mentionBtoBsomeBotherBmemoryBlocationBwhereBtheBactualBd
ataBisBstored.



TwoBregionsBofBmemoryBthatBstoreBdataB-BAnswer-Bstack

-Bheap

, StackB-BAnswerlocationBforBstorageBofBvalueBtypes

(last-in,Bfirst-outBdataBstructure)

-BPrimaryBoperations:

B>Bpush()B:BadditionBofBanBelementBtoBtheBtopBofBtheBstack

B>Bpop()B:BremovalBofBanBelementBfromBtheBtopBofBtheBstack

B>BClear()

B>BRemove()

B>BToArray()

B>BContains()

B>BCount()



HeapB-
BAnswerTheBreferenceBtypeBisBstoredBinBtheBstackBbutBtheBactualBdataBisBstoredBinBtheB"__
____"



User-definedBtypesB-BAnswer-Bclass

-Bstruct

-Barray

NOTE:BcanBbeBclassifiedBasBeitherBreferenceBorBvalueBtypes



_______BisBaBtypeBthatBstoresBlogicallyBrelatedBdataBandBfunctionsB-BAnsweraBclass



DeclareBaBclassB-BAnswerclassBnameOfClass

{

//memberBdeclarations

}



ABfieldB-BAnswer-BStoresBdata

-BIsBaBvariableB(ofBanyBtype)BthatBisBaBmemberBofBaBclass

-