BABAR C++ Course Running the Examples - HEPHY

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CommentsMain programTwo forms of comments allowed (ch2/comments.C)• Tradition C style/* This is a comment *//** This is a multiline* comment*/a = /* ugly comment */ b + c;• New C++ style (also Objective-C)// This is a comment//// This is a multiline// comment//a = b + c; // comment after an expressionAll programs must have a mainMost trivial is (ch2/trivial.C)int main() {return 0;}• under UNIX, suffix is .C or .cc• main() is a function called by the OS• this main() takes no arguments• braces (“{” and “}” ) denote body of function• main returns 0 to the OS (success!)• a statement ends with semi-colon (“;”), otherwisecompletely free form• same rules as C (except .c suffix is used)Computing group recommends C++ styleBABAR C++ Course 3 Paul F. KunzBABAR C++ Course 4 Paul F. Kunz
C++ Input and OutputMore on I/OIntroduce I/O early, so we can run programs fromshell and see something happen :-)Example (ch2/regurgiate.C)#include // preprocessor commandint main() {// Read and print three floating point numbersfloat a, b, c;cin >> a >> b >> c; // input// outputcout
Page 1: BABAR C++ CourseRunning the Example
Page 5 and 6: Declaring types and initializingTyp
Page 7 and 8: Relational OperatorsLogical operato
Page 9 and 10: Assignment operatorsOperator Preced
Page 11 and 12: Coding Styleswhile loopC/C++ is fre
Page 13 and 14: do-while Examplefor loopSnippet fro
Page 15 and 16: ArraysExample Code and a TestA coll
Page 17 and 18: Plan of the dayFunctionsFunctionsPo
Page 19 and 20: Header files used with definitionHe
Page 21 and 22: Functions in CHeader FilesFunction
Page 23 and 24: Pointers and ArraysPointer Arithmet
Page 25 and 26: Progression towards C++ styleExampl
Page 27 and 28: Line fit continuedCharacter Strings
Page 29 and 30: Formal ArgumentsReferencesConsider(
Page 31 and 32: More on declarationsconst PointerWe
Page 33 and 34: Inline FunctionsSummarySometimes, t
Page 35 and 36: ThreeVectorUsing a class objectCLHE
Page 37 and 38: Use of private keywordInitializing
Page 39 and 40: Access member functionsInline acces
Page 41 and 42: C++ designHomeworkC++ style• effi
Page 43 and 44: Member InitializersFunction Return
Page 45 and 46: Operator Function ImplementationCom
Page 47 and 48: Need Symmetric Operator FunctionsTh
Page 49 and 50: SummaryLevels of Abstraction in Phy
Page 51 and 52: Plan of the daySimpleFloatArray Cla
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Constructor Implementationscopy Imp
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operator= Member FunctionAssignment
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Key pointsClass explosion?• shoul
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Function TemplatesList or Array?Rem
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The Node and List classesProblemsDe
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IteratorsIterators++CompareSimpleAr
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Standard Template Library (STL)Feat
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Recall our test programPossible 4-V
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Use of Lorentz VectorMemory modelCo
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Even more of ImplementationWhat’s
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Class HierarchyObject HierarchyIn c
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Class hierarchyLockable classFor bo
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The classes involvedmain.ccFrom CLH
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Do particle type identificationIden
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Finally, find all B 0 -> D * D *Sum
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Particle Data Table classLayoutHist
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PDTEntry classDecayMode classParts
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Gismo HistorySome Gismo ClassesVers
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Surface classPlane classPart of the
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Gismo VolumePart of implementationP
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Back to implementationFollowing the
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As expectedVirtual destructorIn Cir
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