C++PrimerPlus第六版课后题第七章

cout<<\<< size <

Show_array(ps, num);

Reverse_array(ps, num); Show_array(ps, num);

Reverse_array(ps + 1, num - 2); Show_array(ps, num);

deleteps;

return 0; }

intFill_array(double *arr, int n) {

inti = 0;

cout<<\ ;

while ( (i< n) && (cin>>arr[i])) i++; returni; }

voidShow_array(double *arr, int n) {

cout<<\<

cout<<\<

double * Reverse_array(double *arr, int n) {

double * temp= newdouble [n]; for (inti = 0; i< n; i++) temp[i] = arr[n-i-1]; for (inti = 0; i< n; i++) arr[i] = temp[i]; delete temp; returnarr; }

7.

#include

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usingnamespacestd;

constint Max = 5;

double * Fill_array(doublear[], int limit); voidShow_array(constdoublear[], double * n); void revalue(double r, doublear[], double * n);

int main() {

double properties[Max];

double * address = Fill_array(properties, Max); Show_array(properties, address); if ((address - properties) > 0 ) {

cout<<\ ; double factor;

while (!(cin>> factor)) {

cin.clear();

while (cin.get() != '\\n') continue;

cout<<\ ; }

revalue(factor, properties, address); Show_array(properties, address); }

cout<<\<

double * Fill_array(doublear[], int limit) {

double temp; inti;

for (i = 0; i< limit; i++) {

cout<<\<> temp; if (!cin) {

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cin.clear();

while (cin.get() != '\\n') continue;

cout<<\ ; break; }

elseif (temp < 0) break; ar[i] = temp; }

return (ar + i); }

voidShow_array(constdoublear[], double * n) {

for (inti = 0; i< (n - ar); i++)

cout<<\<

void revalue(double r, doublear[], double * n) {

for (inti = 0; i< (n - ar); i++) ar[i] *= r; }

8. a)

#include

usingnamespacestd;

constint seasons = 4;

constchar * arr[4] = {\, \, \, \}; voidfill(double * pa, int n);

voidshow(constdouble * pa, int n); intmain() {

doublear[seasons]; fill(ar, seasons); show(ar, seasons); return 0; }

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voidfill(double * pa, int n) {

for(inti= 0; i< n; i++) {

cout<<\<> pa[i]; } }

voidshow(constdouble * pa, int n) {

double total = 0.0; cout<<\; for(inti = 0; i< n; i++) {

cout<

cout<<\<< total <

b)

#include

usingnamespacestd;

constint seasons = 4;

constchar * arr[4] = {\, \, \,

struct money {

double expense; };

voidfill(money * pa, int n);

voidshow(const money * pa, int n); intmain() {

money ar[seasons]; fill(ar, seasons); show(ar, seasons); return 0;

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\};