#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 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";
cout << "donation#1:";
int i = 0;
while (i <MaxSize && cin >> donations[i])
{
if (++i <MaxSize)
{
cout << "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) pianist\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", "title3", "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 by 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.fullname << 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 << 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 <= 5000)
{
tax = 0;
}
else if (wage > 5000 && wage <= 1500)
{
tax = 5000 * 0 + (wage - 5000)*0.1;
}
else if (wage > 1500 && wage <= 3500)
{
tax = 5000 * 0 + 10000 * 0.1 + (wage - 15000)*0.15;
}
else
{
tax = 5000 * 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();
donor *donorSet = 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 << donorSet[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++;
}
else
consonantsCount++;
cin.get(ch);
while (ch != ‘ ‘&& ch != ‘\n‘)
{
cin.get(ch);
}
}
else
cin.get(ch);
}
cout << vowelCount << " words beginning 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";
}
else
cout << "Input terminated for unknown reason.\n";
inFile.close();
cout << "file has " << count << "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();
donor *donorSet = new donor[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";
}
else
cout << "Input file terminated by unknown reasons.\n";
inFile.close();
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 << donorSet[i].name << endl;
flag = 1;
}
}
if (flag == 0)
{
cout << "None.\n";
}
return 0;
}
int main()
{
test6_9();
system("pause");
return 0;
}
时间： 2024-08-02 15:17:37