计算机院c考试题及答案

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1、Chapter61.Whatistheerrorinthefollowingdefinition?structBankAccount{intID;doubleamount;}CorrectAnswer:Thereisasemicolonmissingaftertherightcurlybrace.2.Giventhefollowingdeclaration,howdoweaccessthexandymembersofthestructure?structPoint{intx;inty;};CorrectAnswer:Poi

2、ntp;p.x=10;p.y=20;3.Whichofthefollowingisawaythatstructuresdifferfromclasses?CorrectAnswer:Aclassisusedwithobject-orientedprogrammingwhileastructisnot.4.1fastructureisbeingaccessedas:Foox;x.vall.val2=10;Whichdefinitionallowsthisassignmenttobevalid?CorrectAnswer:st

3、ructStuff{intval2;};structFoo{Stuffvail;};5.Howwouldweinitializethefollowingstructuretocontain1and2upondeclaringthevariableoftypeFoo?structStuff{intval2;};structFoo{intnum;Stuffval1;};CorrectAnswer:Foox={1，{2});6.Giventhefollowingclassdefinition，whatcodecorrectlyi

4、nvokesthemethodnamed’’printMessage”？classFoo{public:voidprintMessage();intx;};voidFoo::printMessage()cout«"Hellothere"«endl;CorrectAnswer:intmain(){Foof;f.printMessage();return0;}5.Undertheprincipleofinformationhiding，whichclassdefinitionbestencapsulatedthevariabl

5、enamed"x"?CorrectAnswer:classFoo{private:intx;public:voidsetX(intval);intgetX();};voidFoo::setX(intval){x=val;}intFoo::getX(){returnx;}6.Whatistheerrorinthefollowingdefinition?classBankAccount{public:intID;doubleamount;}CorrectAnswer:Thereisamissingsemicolonaftert

6、herightcurlybrace.7.GiventhefollowingclassdefinitionforaMoneyobject:classMoney{private:intdollars;intcents;public:voidsetValue(intd，intc);voidaddValue(intd，intc);}；voidMoney::setValue(intd,intc){dollars=d;cents=c;}HowcouldweimplementaddValuesothatifweaddanewdollar

7、andcentamountweupdatethedollaramountappropriatelyincasewehaveover99cents?Thatis,thenumberofcentsafteraddingshouldneverbemorethan99.CorrectAnswer:voidMoney::addValue(intd,intc)dollars=dollars+d;cents=cents+c;if(cents>99){dollars=dollars+(cents/100);cents=cents%100;

8、)}Thisincorrectlysetsthenumberofcentsintheupdatedtotal.Considerusingthemodulusoperatortogettheremainder.lO.Giventhefollowingclassdefinition:classMoney{p