C++大学教程习题解答第七版.docx

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C++大学教程习题解答第七版.docx

C++大学教程习题解答第七版

第六章函数和递归入门

6.12

#include

#include

#include

usingnamespacestd;

doublecalculateCharges(doublehours);

intmain()

{

doublehours1,hours2,hours3;

cout<<"Inputthehoursofcar:

";

cin>>hours1>>hours2>>hours3;

cout<

(2);

cout<<"Car"<

cout<<"1"<

cout<<"2"<

cout<<"3"<

cout<<"TOTAL"<

<

}

doublecalculateCharges(doublehours)

{

if((hours>0)&&(hours<=3))

return2.0;

else

if((hours>3)&&(hours<=19))

return2.00+ceil(hours-3)*0.5;

else

return10;

}

6.14

#include

#include

#include

usingnamespacestd;

doubleroundToInteger(double);

doubleroundToTenths(double);

doubleroundToHundredths(double);

doubleroundToThousandths(double);

intmain()

{

doublex;

cout<<"PleaseInputthenumber:

";

cin>>x;

cout<<"roundToInteger:

"<

cout<<"roundToTenths:

"<

cout<<"roundToHundredths:

"<

cout<<"roundToThousandths:

"<

}

doubleroundToInteger(doublenumber)

{

returnfloor(number+.5);

}

doubleroundToTenths(doublenumber)

{

returnfloor(number*10+.5)/10;

}

doubleroundToHundredths(doublenumber)

{

returnfloor(number*100+.5)/100;

}

doubleroundToThousandths(doublenumber)

{

returnfloor(number*1000+.5)/1000;

}

6.16

#include

#include

#include

#include

usingnamespacestd;

 

intmain()

{

srand(time(0));

intx;

x=1+rand()%1;

cout<<"x="<

x=1+rand()%100;

cout<<"x="<

x=0+rand()%9;

cout<<"x="<

x=1000+rand()%112;

cout<<"x="<

x=-1+rand()%2;

cout<<"x="<

x=-3+rand()%15;

cout<<"x="<

}

6.17

#include

#include

#include

#include

usingnamespacestd;

intmain()

{

intarray1[]={2,4,6,8,10};

intarray2[]={3,5,7,9,11};

intarray3[]={6,10,14,18,22};

srand(time(0));

for(inti=0;i<3;i++)

{

cout<<"第̨²"<

随?

机¨²结¨¢果?

:

"<

cout<<"\t第̨²一°?

组Á¨¦数ºy据Y中D的Ì?

随?

机¨²数ºy:

"<

cout<<"\t第̨²二t组Á¨¦数ºy据Y中D的Ì?

随?

机¨²数ºy:

"<

cout<<"\t第̨²三¨y组Á¨¦数ºy据Y中D的Ì?

随?

机¨²数ºy:

"<

cout<

}

return(0);

}

6.18

#include

usingnamespacestd;

intintegerPower(int,int);

intmain()

{

intx,y;

cout<<"Pleaseinputthebase:

";

cin>>x;

cout<<"plesaeinputtheexponent:

";

cin>>y;

cout<<"integerPower("<

}

intintegerPower(intbase,intexponent)

{

intvalue1=1;

for(intcounter=1;counter<=exponent;counter++)

value1*=base;

returnvalue1;

}

6.19

#include

#include

#include

usingnamespacestd;

doublehypotenuse(double,double);

intmain()

{

doublex,y;

cout<<"Pleaseinputtheside1:

";

cin>>x;

cout<<"plesaeinputtheside2:

";

cin>>y;

cout<<"hypotenuse="<

(2)<

}

doublehypotenuse(doubleside1,doubleside2)

{

returnsqrt(pow(side1,2)+pow(side2,2));

}

6.20

#include

#include

usingnamespacestd;

boolmultiple(double,double);

intmain()

{

intx,y;

cout<<"Pleaseinputtwointegernumbers:

";

loop:

cin>>x>>y;

cout<

//if(multiple(x,y)==1)

//cout<<"true\n";

//else

//cout<<"false\n";

gotoloop;

}

boolmultiple(doublenumber1,doublenumber2)

{

if(ceil(number2/number1)==floor(number2/number1))

returntrue;

else

returnfalse;

}

6.21

#include

#include

usingnamespacestd;

booliseven(int);

intmain()

{

intx;

cout<<"Pleaseinputtheintegernumber:

";

cin>>x;

cout<

//if(multiple(x,y)==1)

//cout<<"true\n";

//else

//cout<<"false\n";

}

booliseven(intnumber)

{

if(number%2==0)

returntrue;

else

returnfalse;

}

6.22

#include

usingnamespacestd;

voidprintSar(int);

intmain()

{

intx;

cout<<"Pleaseinputtheintegernumber:

";

cin>>x;

printSar(x);

return0;

}

voidprintSar(intnumber)

{

for(intcounter1=1;counter1<=number;counter1++)

{

for(intcounter=1;counter<=number;counter++)

cout<<'*';

cout<

}

}

6.23

#include

usingnamespacestd;

voidprintSar(int,char);

charfillCharacter(char);

intmain()

{

intx;

charc;

cout<<"Pleaseinputtheintegernumberandcharacter:

";

cin>>x;

cin>>c;

printSar(x,c);

return0;

}

voidprintSar(intnumber,charcharacter)

{

for(intcounter1=1;counter1<=number;counter1++)

{

for(intcounter=1;counter<=number;counter++)

cout<

cout<

}

}

charfillCharacter(charCharacter)

{

returnCharacter;

}

6.24

#include

usingnamespacestd;

intDivide(int,int);

intRemainder(int,int);

intNumberOrder(int);

intmain()

{

intx,y;

shortz;

cout<<"Pleaseinputtwointegernumberstouse:

";

cin>>x;

cin>>y;

cin>>z;

cout<<"Theresultofdivide:

"<

cout<<"\nTheRemainderofdivide:

"<

cout<<"thenumberof"<

";

NumberOrder(z);

}

intDivide(intnumber1,intnumber2)

{

returnnumber1/number2;

}

intRemainder(intnumber1,intnumber2)

{

returnnumber1%number2;

}

intNumberOrder(intnumber3)

{

for(intcounter=1,mode=1;counter<=5;counter++)

{

mode=mode*10;

if(Remainder(number3,mode)==number3)

{

for(intcounter1=counter-1,mode1=mode;counter1>=1,mode1=mode1/10;counter1--)

{

cout<<""<

number3=Remainder(number3,mode1);

}

cout<

}

}

return0;

}

6.25

#include

#include

usingnamespacestd;

doubleTimeFunction(int,int,int);

intmain()

{

intH_1,M_1,S_1;

intH_2,M_2,S_2;

charColon1,Colon2;

 

cout<<"Pleaseinputthefirsttime:

";

cin>>H_1>>Colon1>>M_1>>Colon2>>S_1;

cout<<"Thesecondsfromthelastclockstruck12o'clockis:

"<

cout<<"Pleaseinputthesecondtime:

";

cin>>H_2>>Colon1>>M_2>>Colon2>>S_2;

cout<<"Thesecondsfromthelastclockstruck12o'clockis:

"<

cout<<"Thenumberofsecondsbetweentwotimesare:

"<

}

doubleTimeFunction(intHours,intMinutes,intSeconds)

{

returnHours*3600+Minutes*60+Seconds;

}

6.26

#include

#include

usingnamespacestd;

doubleFahrenheit(int);

doubleCelsius(int);

intmain()

{

intDegreeFahrenheit;//华a氏º?

温?

度¨¨

intDegreeCelsius;//摄¦?

氏º?

温?

度¨¨

 

cout<

(2);

cout<<"PleaseinputtheDegreeFahrenheit:

";

cin>>DegreeFahrenheit;

cout<<"DegreeCelsiusis:

"<

cout<<"PleaseinputtheDegreeCelsius:

";

cin>>DegreeCelsius;

cout<<"DegreeFahrenheitis:

"<

cout<<"thetableofDegreeCelsius-----DegreeFahrenheit"<

for(intcounter=0,i=1;counter<=100;counter++)

{

cout<

if(i%10==0)

cout<

i++;

}

cout<<"\nthetableofDegreeFahrenheit-----DegreeCelsius"<

for(intcounter=32,i=1;counter<=212;counter++)

{

cout<

if(i%10==0)

cout<

i++;

}

}

 

doubleFahrenheit(inttemperature)

{

returntemperature*1.8+32;

}

doubleCelsius(inttemperature)

{

return(temperature-32)/1.8;

}

6.27

#include

#include

usingnamespacestd;

doublemin(double,double,double);

intmain()

{

doublex,y,z;

cout<<"pleaseinputthreedoublenumbers:

";

cin>>x>>y>>z;

cout<<"theminimumnumberis"<

}

doublemin(doublex,doubley,doublez)

{

doubleT;

T=x

x:

y;

returnT

T:

z;

}

6.28

#include

#include

usingnamespacestd;

intisperfect(int);

intmain()

{

cout<<"perfectnumbers:

"<

for(intcounter=1;counter<=1000;counter++)

{

if(isperfect(counter)==counter)

cout<

}

}

intisperfect(intnumber)

{

intsum=0;

intcounter1;

for(counter1=1;counter1

if(number%counter1==0)

sum+=counter1;

returnsum;

}

6.29

#include

#include

#include

usingnamespacestd;

boolisprime(int);

intmain()

{

cout<<"thenumbersbetween2and10000is:

"<

for(intcounter1=2,i=0;counter1<=10000;counter1++)

{

if(isprime(counter1)==true)

{

cout<

i++;

if(i%10==0)

cout<

}

}

}

boolisprime(intnumber)

{

if(num

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