C++基础练习试题及答案英文版十二.docx

C++基础练习试题及答案英文版十二.docx

《C++基础练习试题及答案英文版十二.docx》由会员分享，可在线阅读，更多相关《C++基础练习试题及答案英文版十二.docx（8页珍藏版）》请在冰点文库上搜索。

C++基础练习试题及答案英文版十二

Section12.2TemplatesBasics

12.1 Whichofthefollowingstatementsiscorrect?

A.Templatesprovidethecapabilitytoparameterizetypesinfunctionsandclasses.

B.Withtemplates,youcandefineonefunctionoroneclasswithagenerictypethatcanbesubstitutedforaconcretetypebythecompiler.

C.Templatesfacilitatesdevelopingreusablesoftware.

D.Templatesimprovesperformance.

12.2 Thetemplateprefixmaybedefinedas_________.

A.template

B.template

12.3 Atemplateprefixfortwoparametersmaybedefinedas_____________.

A.template

B.template

C.template

D.template

12.4 Supposeatemplatefunctionisdefinedasfollows:

template

T maxValue（const T& value1, const T& value2）

{

  if（value1>value2）

    returnvalue1;

  else

    returnvalue2;

}

Which of the following statements are correct?

A.cout<

B.cout<

C.cout<

D.cout<

E.cout<

12.5 Supposeatemplatefunctionisdefinedasfollows:

template

T1 maxValue（const T1& value1, const T2& value2）

{

  if（value1>value2）

    returnvalue1;

  else

    returnvalue2;

}

Which of the following statements are correct?

A.cout<

B.cout<

C.cout<

D.cout<

E.cout<

12.6 Ifyoudefinetheswapfunctionasfollows:

template

void swap（T& var1, T& var2）

{

  Ttemp=var1;

  var1=var2;

  var2=temp;

}

You can invoke swap using ______.

A.swap（1,2）

B.intv1=1;intv2=2;swap（v1,v2）;

C.intv1=1;intv2=2;swap（&v1,&v2）;

D.intv1=1;doublev2=2;swap（v1,v2）;

Section12.3Example:

AGenericSort

12.7 Supposeatemplatefunctionisdefinedasfollows:

template

void printArray（T list[], int arraySize）

{

  for（inti=0;i

  {

    cout<

  }

  cout<

}

Which of the following statements are correct?

A.intlist[]={1,2,3,4};printArray（list,4）;

B.intlist[]={1,2.5,3,4};printArray（list,4）;

C.doublelist[]={1,2,3,4};printArray（list,4）;

D.stringlist[]={"Atlanta","Dallas","Houston","Chicago"};printArray（list,4）;

Section12.4ClassTemplates

12.8 Supposeyoudefine

template

class Stack

{

  Stack（）;

  ...

};

Which of the following statements are correct?

A.Stacks;

B.Stacks;

C.Stack<>s;

D.Stacks;

E.Stacks;

12.9 Supposeyoudefine

template

class Stack

{

  Stack（）;

  ...

private:

  Telements[capacity];

  intsize;

};

Which of the following statements are correct?

A.Stacks;

B.Stacks;

C.Stack<50>s;

D.Stacks;

12.10 Whichofthefollowingstatementsaretrue?

A.Aclasstemplatecanbederivedfromaclasstemplate.

B.Aclasstemplatecanbederivedfromanontemplateclass.

C.Anontemplateclasscanbederivedfromaclasstemplatespecialization.d.Stacks;

D.Friendsareusedexactlythesamefortemplateandnontemplateclasses.

E.Youcandefinestaticmembersinatemplateclass.Eachtemplatespecializationhasitsowncopyofastaticdatafield.

12.11 IntheimplementationofImprovedStack.h,whichofthefollowingaretrue?

A.sizeneverreduces.

B.capacityneverreduces.

C.InsideStack,aregulararrayisusedtostoreelements.

D.Ifthecurrentcapacityequalstosize,capacityisdoubledwhenanewelementisaddedtoStack.

Section12.6TheC++vectorClass

12.12 Whichofthefollowingstatementsaretrue?

A.Thearraysizeisfixedintheclassdeclaration.

B.C++providesthevectorclassandyoucancreatevectorobjects.

C.Avectorobjectisjustlikeanarray,butavector?

ssizecangrowautomaticallyifneeded.

D.Avectorhasano-argconstructor.

12.13 Todeclareavectorforholdingintvalues,use__________.

A.vectorv;

B.vectorv;

C.vectorv;

D.vectorv（）;

12.14 Toaddanintvalue5toavectorvofintegers,use_________.

A.v.add（5）;

B.v.insert（5）;

C.v.push_back（5）;

D.v.append（5）;

12.15 Toobtainthesizeofthevectorv,use_______.

A.v.getSize（）;

B.v.length（）;

C.v.getLength（）;

D.v.size（）;

12.16 Todeletealltheelementsinavectorv,use_______.

A.v.deleteAll（）;

B.v.clear（）;

C.v.eraseAll（）;

D.v.delele（）;

12.17 Toobtainthefirstelementinavectorv,use_______.

A.v.at（0）;

B.v[0];

C.v.at

（1）;

D.v[1];

12.18 Whatiswronginthefollowingcode?

  #include

  #include

  usingnamespacestd;

  intmain（）

  {

    vectorv;

    cout<

    return0;

  }

A.Theprogramhasacompileerroronv[0].

B.Theprogramhasaruntimeerroronv[0],becausethevectorisempty.

C.Theprogramhasacompileerroronvectorv.

D.Theprogramhasaruntimeerroronvectorv.

12.19 Whatiswronginthefollowingcode?

  vectorv;

  v.push_back（"Beijing"）;

  v.push_back（"Tokyo"）;

  v.push_back（"Shanghai"）;

  v[3]="HongKong";

A.Thelastlineinthecodecausesaruntimeerrorbecausethereisnoelementatindex3inthevector.

B.Thelastlineinthecodehasacompileerrorbecausethereisnoelementatindex3inthevector.

C.Ifyoureplacethelastlinebyv[2]="HongKong",thecodewillcompileandrunfine.

D.Ifyoureplacethelastlinebycout<

E.Ifyoureplacethelastlinebycout<