c+++primer+plus+第五版》编程练习习题答案Word文件下载.docx

c+++primer+plus+第五版》编程练习习题答案Word文件下载.docx

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EnteratemperatureinCelsius:

doubleC;

C;

doubleF;

F=C_to_F（C）;

C<

degreesCelsius="

F<

degreesFahrenheit\n"

doubleC_to_F（doubletemp）

return1.8*temp+32.0;

//pe3-1.cpp

constintInch_Per_Foot=12;

//Note:

someenvironmentsdon'

tsupportthebackspacecharacter

Pleaseenteryourheightininches:

___/b/b/b"

intht_inch;

ht_inch;

intht_feet=ht_inch/Inch_Per_Foot;

intrm_inch=ht_inch%Inch_Per_Foot;

Yourheightis"

ht_feet<

feet,"

rm_inch<

inch（es）.\n"

//pe3-3.cpp

constdoubleMINS_PER_DEG=60.0;

constdoubleSECS_PER_MIN=60.0;

intdegrees;

intminutes;

intseconds;

doublelatitude;

Enteralatitudeindegrees,minutes,andseconds:

\n"

First,enterthedegrees:

degrees;

Next,entertheminutesofarc:

minutes;

Finally,enterthesecondsofarc:

seconds;

latitude=degrees+（minutes+seconds/SECS_PER_MIN）/MINS_PER_DEG;

degrees<

degrees,"

minutes<

minutes,"

seconds<

seconds="

latitude<

degrees\n"

//pe3-5.cpp

Howmanymileshaveyoudrivenyourcar?

floatmiles;

miles;

Howmanygallonsofgasolinedidthecaruse?

floatgallons;

gallons;

Yourcargot"

miles/gallons;

milespergallon.\n"

//pe3-6.cpp

constdoubleKM100_TO_MILES=62.14;

constdoubleLITERS_PER_GALLON=3.875;

intmain（void）

doubleeuro_rating;

doubleus_rating;

Enterfuelconsumptioninlitersper100km:

euro_rating;

//dividebyLITER_PER_GALLONtogetgallonsper100-km

//dividebyKM100_TO_MILEStogetgallonspermile

//invertresulttogetmilespergallon

us_rating=（LITERS_PER_GALLON*KM100_TO_MILES）/euro_rating;

euro_rating<

litersper100kmis"

us_rating<

//pe4-2.cpp--storingstringsinstringobjects

string>

stringname;

stringdessert;

Enteryourname:

getline（cin,name）;

//readsthroughnewline

Enteryourfavoritedessert:

getline（cin,dessert）;

Ihavesomedelicious"

dessert;

foryou,"

name<

.\n"

//pe4-3.cpp--storingstringsinchararrays

cstring>

constintSIZE=20;

charfirstName[SIZE];

charlastName[SIZE];

charfullName[2*SIZE+1];

Enteryourfirstname:

firstName;

Enteryourlastname:

lastName;

strncpy（fullName,lastName,SIZE）;

strcat（fullName,"

"

）;

strncat（fullName,firstName,SIZE）;

fullName[SIZE-1]='

\0'

Here'

stheinformationinasinglestring:

fullName<

endl;

//pe4-5.cpp

//acandybarstructure

structCandyBar{

charbrand[40];

doubleweight;

intcalories;

};

//introducesnamespacestd

CandyBarsnack={"

MochaMunch"

2.3,350};

Brandname:

snack.brand<

Weight:

snack.weight<

Calories:

snack.calories<

//pe4-7.ccp

constintSlen=70;

structpizza{

charname[Slen];

floatdiameter;

floatweight;

pizzapie;

Whatisthenameofthepizzacompany?

cin.getline（pie.name,Slen）;

Whatisthediameterofthepizzaininches?

pie.diameter;

Howmuchdoesthepizzaweighinounces?

pie.weight;

Company:

pie.name<

Diameter:

pie.diameter<

inches\n"

pie.weight<

ounces\n"

//pe5-2.cpp

doublesum=0.0;

doublein;

Enteranumber（0toterminate）:

in;

while（in!

=0）{

sum+=in;

Runningtotal="

sum<

Enternextnumber（0toterminate）:

}

Bye!

//pe5-4.cpp

//booksales

constintMONTHS=12;

constchar*months[MONTHS]={"

January"

February"

March"

April"

May"

June"

July"

August"

September"

October"

November"

December"

intsales[MONTHS];

intmonth;

Enterthemonthlysalesfor\"

C++forFools\"

:

for（month=0;

month<

MONTHS;

month++）

{

Salesfor"

months[month]<

sales[month];

doubletotal=0.0;

total+=sales[month];

Totalsales:

total<

//pe5-6.cpp

structcar{charname[20];

intyear;

intn;

Howmanycarsdoyouwishtocatalog?

n;

while（cin.get（）!

='

\n'

）//getridofrestofline

;

car*pc=newcar[n];

inti;

for（i=0;

i<

i++）

Car#"

（i+1）<

Pleaseenterthemake:

cin.getline（pc[i].name,20）;

Pleaseentertheyearmade:

pc[i].year;

Hereisyourcollection:

pc[i].year<

pc[i].name<

delete[]pc;

//pe5-7.cpp--countwordsusingC-stylestring

//prototypeforstrcmp（）

constintSTR_LIM=50;

charword[STR_LIM];

intcount=0;

Enterwords（tostop,typetheworddone）:

while（cin>

word&

&

strcmp（"

done"

word））

++count;

Youenteredatotalof"

count<

words.\n"

//pe5-9.cpp

//nestedloops

introws;

introw;

intcol;

intperiods;

Enternumberofrows:

rows;

for（row=1;

row<

=rows;

row++）

periods=rows-row;

for（col=1;

col<

=periods;

col++）

'

.'

//colalreadyhascorrectvaluefornextloop

for（;

*'

//pe6-1.cpp

cctype>

intmain（）

charch;

cin.get（ch）;

while（ch!

@'

）

if（!

isdigit（ch））

if（isupper（ch））

ch=tolower（ch）;

elseif（islower（ch））

ch=toupper（ch）;

ch;

//pe6-3.cpp

Pleaseenteroneofthefollowingchoices:

c）carnivorep）pianist\n"

t）treeg）game\n"

while（ch!

c'

&

ch!

p'

t'

g'

Pleaseenterac,p,t,org:

switch（ch）

case'

:

Acatisacarnivore.\n"

break;

RaduLupuisapianist.\n"

Amapleisatree.\n"

Golfisagame.\n"

default:

Theprogramshouldn'

tgethere!

//pe6-5.cpp

//Neutroniataxation

constdoubleLEV1=5000;

constdoubleLEV2=15000;

constdoubleLEV3=35000;

constdoubleRATE1=0.10;

constdoubleRATE2=0.15;

constdoubleRATE3=0.20;

doubleincome;

doubletax;

Enteryourannualincomeintvarps:

income;

if（income<

=LEV1）

tax=0;

elseif（income<

=LEV2）

tax=（income-LEV1）*RATE1;

=LEV3）

tax=RATE1*（LEV2-LEV1）+RATE2*（income-LEV2）;

else

tax=RATE1*（LEV2-LEV1）+RATE2*（LEV3-LEV2）

+RATE3*（income-LEV3）;

YouoweNeutronia"

tax<

tvarpsintaxes.\n"

//pe6-7.cpp

stringword;

intvowel=0;

intconsonant=0;

intother=0;

Enterwords（qtoquit）:

word;

while（word!

="

q"

ch=tolower（word[0]）;

if（isalpha（ch））

if（ch=='

a'

||ch=='

e'

i'

o'

||ch=='

u'

vowel++;

consonant++;

other++;

vowel<

"

wordsbeginningwithvowels\n"

consonant<

wordsbeginningwithconsonants\n"

other<

others\n"

//pe6-8.cpp--countingcharacters

fstream>

//fileI/Osuppport

cstdlib>

//supportforexit（）

constint