C + + Primer pluse_6_ post-lesson questions

#include <iostream> #include <cctype> #include <array> #include <string> #include <cstring > #include <fstream> #include <cstdlib>using namespace Std;int t6_1 () {char ch;cout << "Enter text for Analysis, and the type # to terminate input.\n "; cin.get (ch); while (ch! = ' @ ') {if (IsDigit (ch)) {cin.get (ch); continue;} else if (isupper (ch)) {ch = tolower (ch);} else if (islower (ch)) {ch = toupper (ch);} cout << ch;cin.get (CH);} cout << endl;system ("pause"); return 0;} const int MaxSize = 10;int T6_2 () {array<double, maxsize>donations = {0};cout << "input the donations:\n"; cou T << "donation#1:"; int i = 0;while (i <maxsize && cin >> Donations[i]) {if (++i <maxsize) {cout &L t;< "donation#" << i + 1<< ":";}} Double total = 0;double average = 0;for (int j = 0; J < i; J + +) {total + = Donations[j];} if (i==0) {cout << "No donations.\n";} Else{average = Total/i;cout << "Average is" << average << Endl;cout << "bigger than average:"; for (int j = 0; J < I; J + +) {if (Donations[j] > average) {cout << donations[j] << "";}} System ("pause"); return 0;} int T6_3 () {char ch;cout << "Please enter aone of the following choices:\n"; cout << "c) carnivore\t\t\t p) pian  Ist\n "; cout <<" T) tree\t\t\t\t g) game\n "; cin.get (CH). get (); while (true) {switch (ch) {case ' C ': cout <<" A map is a carnivore.\n "; Break;case ' P ': cout << "A map is a pianist.\n"; Break;case ' t ': cout << "A map is a tree.\n"; Break;case ' G ': cout << "A map is a game.\n"; Break;default:cout << "Please enter a C, p, T, G:"; break;} Cin.get (CH). get ();} System ("pause"); return 0;} const int strsize = 20;typedef struct Bop{char fullname[strsize];char title[strsize];char bopname[strsize];int Preference;} Bop;int T6_4 () {Bop B1 = {"Bopp1", "Title1", "Bop1", 1};bop b2 = {"Bopp2", "Title2", "Bop2", 0};bop B3 = {"Bopp3", "Ti Tle3 "," BOP3 ", 2};cout <<" BOP repoRt.\n "; cout <<" A.display by name.\t\t\t B.display by title.\n "; cout <<" C.display by bopname.\t\t D.display b Y preference.\n "; cout <<" q.quit.\n "; cout <<" Enter Your choice: "; char ch;cin.get (CH). get (); while (ch! = ' Q ') {switch (ch) {case ' a ': cout << b1.fullname << endl;cout << b2.fullname << endl;cout << b3.ful  LName << endl;break;case ' B ': cout << b1.title << endl;cout << b2.title << endl;cout << B3.title << endl;break;case ' C ': cout << b1.bopname << endl;cout << b2.bopname << endl;cout << b3.bopname << endl;break;case ' d ': if (b1.preference== 0) {cout << b1.fullname << Endl;} else if (b1.preference ==1) {cout << b1.title << Endl;} Else{cout << b1.bopname << Endl;} if (b2.preference = = 0) {cout << b2.fullname << Endl;} else if (b2.preference = = 1) {cout << b2.title << Endl;} Else{cout << B2.bopname <&Lt Endl;} if (b3.preference = = 0) {cout << b3.fullname << Endl;} else if (b3.preference = = 1) {cout << b3.title << Endl;} Else{cout << b3.bopname << Endl;} Break;default:cout << "Please input a A, B, C, D, Q:";} Cin.get (CH). get ();} cout << "bye!"; System ("pause"); return 0;} int T6_5 () {Double wage = 0;double tax = 0;while (cin>>wage && wage >=0) {if (wage <=) {tax = 0;} else if (wage > wage && <=) {tax = 0 + (wage-5000) *0.1;} else if (Wage > && wage <= 3500) {tax = 0 + 10000 * 0.1 + (wage-15000) *0.15;} Else{tax = 0 + 10000 * 0.1 + 20000 * 0.15 + (wage-35000) *0.2;} cout << ' tax = ' << tax << Endl;} System ("pause"); return 0;} typedef struct DONOR{STRING name;double money;} Donor;int t6_6 () {int donors = 0;cout << "Enter the number of donors.\n"; Cin >> Donors;cin.get ();d Onor *donorse t = new Donor[donors];for (int i = 0; i < donors; i++){cout << "Enter donor#" << i + 1 << ": \ n"; getline (cin, donorset[i].name); Cin >> Donorset[i].money; Cin.get ();}  cout << "\ngrand patrons:\n"; int flag = 0;for (int i = 0; i < donors; i++) {if (Donorset[i].money > 10000) {cout << donorset[i].name << endl;flag = 1;}} if (flag = = 0) {cout << "none.\n";} cout << "patrons:\n"; flag = 0;for (int i = 0; i < donors; i++) {if (Donorset[i].money <= 10000) {cout << D Onorset[i].name << endl;flag = 1;}} if (flag = = 0) {cout << "none.\n";} System ("pause"); return 0;}  int t6_7 () {int vowelcount = 0;int Consonantscount = 0;char ch;cout << "Enter words (Q to quit): \ n"; cin.get (ch); while (ch! = ' Q ') {if (Isalpha (CH)) {if (ToLower (ch) = = ' A ' | | tolower (ch) = = ' E ' | | tolower (ch) = = ' I ' | | tolower (ch) = = ' O ' | | tolower (CH) = = ' U ') {vowelcount++;} Elseconsonantscount++;cin.get (CH); while (ch! = ' && ch! = ' \ n ') {cin.get (ch);}} Elsecin.get (CH);} cout << vowelcount << "wordsBeginning with vowels.\n ", cout << consonantscount <<" Words beginning with consonants.\n ";//system (" Pause ") ; return 0;} const int SIZE = 60;int Test6_8 () {char filename[size];ifstream infile;cout << "Enter The name of the data file:"; cin . Getline (Filename,size); Infile.open (filename); if (!infile.is_open ())//failed to open file{cout << ' Could not Open the file.\n "; cout <<" program terminating.\n "; exit (exit_failure);} Char ch;int count = 0;infile >> ch;while (Infile.good ()) {count++;infile >> ch;cout << ch;} if (infile.eof ()) {cout << "End of the File.\n";} else if (Infile.fail ()) {cout << "Input terminated by Data mismatch.\n";} Elsecout << "Input terminated for unknown reason.\n", Infile.close () cout << "file has" << count <&lt ; "characters.\n"; return 0;} int Test6_9 () {char filename[size];ifstream infile;cout << "Enter the file name:"; cin.getline (filename, SIZE); Infile.open (filename); if (!infile.is_open ()) {cout << "File cannot be opened.\n", cout << "program terminating.\n"; exit (exit_failure);} int donors = 0;cout << "Enter the number of donors.\n"; InFile >> donors;infile.get ();d onor *donorset = new Don or[donors];for (int i = 0; i < donors; i++) {cout << "Enter donor#" << i + 1 << ": \ n"; Getline (InFile, Donorset[i].name); InFile >> donorset[i].money;infile.get ();} if (infile.eof ()) {cout << "file end.\n";} else if (Infile.fail ()) {cout << "Input file terminated by mismatch.\n";} Elsecout << "Input file terminated by unknown reasons.\n"; Infile.close () cout << "\ngrand patrons:\n"; int fla g = 0;for (int i = 0; i < donors; i++) {if (Donorset[i].money > 10000) {cout << donorset[i].name << endl;f lag = 1;}} if (flag = = 0) {cout << "none.\n";} cout << "patrons:\n"; flag = 0;for (int i = 0; i < donors; i++) {if (Donorset[i].money <= 10000) {cout << D Onorset[i].name << endl;flag = 1;}} if (flag = = 0) {cout << "none.\n";} return 0;} int main () {test6_9 (); System ("pause"); return 0;}

　　

C + + Primer pluse_6_ post-lesson questions