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#include <iostream>
#include <fstream>
#include <cstring>
#include <iomanip>
using namespace std;
char menu();
void interactive();
void enter(char* num, char* date, char* to, double amount);
void list();
void balance();
enum sizes { NUM_SZ=15, DATE_SZ=15, TO_SZ=30, AMOUNT_SZ=10 }; // data sizes
int main(int argc, char* argv[])
{
if (argc == 1) // no arguments ==> enter interactive mode
interactive();
else if (argc == 2) // allow either -l (lower case L) or -b
{
if (!strcmp(argv[1], "-l")) // -l
list();
else if(!strcmp(argv[1], "-b")) // -b
balance();
else
interactive(); // unrecognized flag: go in to interactive mode
}
else if (argc == 5) // 4 args ==> make new entry and quit
enter(argv[1], argv[2], argv[3], atof(argv[4]));
else
cerr << "USAGE: checkbook [ -l | -b ] | checkbook <num> <date> <to> <amount>\n";
char* temp = "Version 2008/11/18";
return 0;
}
char menu()
{
cout << "E\tEnter A Check or Deposit\n";
cout << "L\tList All Entries\n";
cout << "B\tBalance Checkbook\n";
cout << "Q\tQuit\n";
char chice;
cin >> chice;
cin.ignore(); // discard the new line
return chice;
}
void interactive()
{
while (true)
{
char operation = menu();
switch(operation)
{
case 'b' : // balance
case 'B' :
balance();
break;
case 'e' : // enter
case 'E' :
{
char num[NUM_SZ];
char date[DATE_SZ];
char to[TO_SZ];
char amount[AMOUNT_SZ];
cout << "Please enter the check number: ";
cin.getline(num, NUM_SZ);
cout << "Please enter the check date: ";
cin.getline(date, DATE_SZ);
cout << "Please enter the check reipient: ";
cin.getline(to, TO_SZ);
cout << "Please enter the check amount: ";
cin.getline(amount, AMOUNT_SZ);
enter(num, date, to, atof(amount));
break;
}
case 'l' : // list
case 'L' :
list();
break;
case 'q' : // quit
case 'Q' :
exit(0);
default:
cerr << "Unknown option: " << operation << endl;
break;
}
}
}
void balance()
{
double newBalance = tempBalance - checkAmount;
return newBalance;
}
void enter(char* num, char* date, char* to, double amount)
{
input.clear();
input.seekp(0, ios::end);
istrstream n1(amount);
double temp;
n1 >> temp;
input << num << " : " << date << " : " << to << " : " << "$" << amount << endl;
input.flush();
}
void list()
{
ifstream input("checkbook.txt");
if (!input.good())
{
cerr << "ERROR: unable to open \"checkbook.txt\"\n";
exit(1);
}
char line[100];
cout << "-----------------------------------------------------------------------\n";
while (input.getline(line, 100))
{
cout << left << setw(NUM_SZ) << strtok(line, ":");
cout << left << setw(DATE_SZ) << strtok(0, ":");
cout << left << setw(TO_SZ) << strtok(0, ":");
cout << "$" << right << setw(AMOUNT_SZ) << atof(strtok(0, ":")) << endl;
}
cout << "-----------------------------------------------------------------------\n";
balance();
input.close();
}
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Apr 20, 2011 at 2:33am