chapter13 ABC

hzchenxiaobin · May 7, 2023 · 7407a4e · 7407a4e
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diff --git a/chapter13/acctabc/a.out b/chapter13/acctabc/a.out
diff --git a/chapter13/acctabc/acctabc.cpp b/chapter13/acctabc/acctabc.cpp
@@ -0,0 +1,82 @@
+#include <iostream>
+#include "acctabc.h"
+
+using namespace std;
+
+AcctABC::AcctABC(const string &s, long an, double bal)
+{
+    fullName = s;
+    acctNum = an;
+    balance = bal;
+}
+
+void AcctABC::Deposit(double amt)
+{
+    if (amt < 0)
+        cout << "Negative deposit is not allowed!" << endl;
+    else
+        balance += amt;
+}
+
+void AcctABC::Withdraw(double amt)
+{
+    balance -= amt;
+}
+
+void Brass::Withdraw(double amt)
+{
+    if (amt < 0)
+        cout << "Withdraw amount must be positive." << endl;
+    else if (amt <= Balance())
+        AcctABC::Withdraw(amt);
+    else
+        cout << "Withdraw amount exceeded your balance!" << endl;
+}
+
+void Brass::ViewAcct() const
+{
+    cout << "Client: " << FullName() << endl;
+    cout << "Account number: " << AcctNum() << endl;
+    cout << "Balance: $" << Balance() << endl;
+}
+
+BrassPlus::BrassPlus(const string &s, long an, double bal, double ml, double r) : AcctABC(s, an, bal)
+{
+    maxLoan = ml;
+    owesBank = 0.0;
+    rate = r;
+}
+
+BrassPlus::BrassPlus(const Brass &br, double ml, double r) : AcctABC(br)
+{
+    maxLoan = ml;
+    rate = r;
+}
+
+void BrassPlus::ViewAcct() const
+{
+    cout << "Client: " << FullName() << endl;
+    cout << "Account number: " << AcctNum() << endl;
+    cout << "Balance: $" << Balance() << endl;
+    cout << "Maxium load: $" << maxLoan << endl;
+    cout << "Loan Rate: " << rate << endl;
+    cout << "Owed to bank: $" << owesBank << endl;
+}
+
+void BrassPlus::Withdraw(double amt)
+{
+    double bal = Balance();
+    if (amt <= bal)
+        AcctABC::Withdraw(amt);
+    else if (amt <= bal + maxLoan - owesBank)
+    {
+        double advance = amt - bal;
+        owesBank = advance * (1.0 + rate);
+        cout << "Bank Advance: $" << advance << endl;
+        cout << "Finance charge: $" << advance * rate << endl;
+        Deposit(advance);
+        AcctABC::Withdraw(amt);
+    }
+    else
+        cout << "Credit limit exceeded. Transaction cancelled.\n";
+}
diff --git a/chapter13/acctabc/acctabc.h b/chapter13/acctabc/acctabc.h
@@ -0,0 +1,55 @@
+#ifndef __ACCTABC_H__
+#define __ACCTABC_H__
+
+#include <iostream>
+#include <cstring>
+
+using namespace std;
+
+class AcctABC
+{
+private:
+    string fullName;
+    long acctNum;
+    double balance;
+
+protected:
+    const string &FullName() const { return fullName; };
+    long AcctNum() const { return acctNum; };
+
+public:
+    AcctABC(const string &s = "Nullbody", long an = -1, double bal = 0.0);
+    void Deposit(double amt);
+    virtual void Withdraw(double amt) = 0;
+    double Balance() const { return balance; };
+    virtual void ViewAcct() const = 0;
+    virtual ~AcctABC(){};
+};
+
+class Brass : public AcctABC
+{
+public:
+    Brass(const string &s = "Nullbody", long an = -1, double bal = 0.0) : AcctABC(s, an, bal){};
+    virtual void Withdraw(double amt);
+    virtual void ViewAcct() const;
+    virtual ~Brass(){};
+};
+
+class BrassPlus : public AcctABC
+{
+private:
+    double maxLoan;
+    double rate;
+    double owesBank;
+
+public:
+    BrassPlus(const string &s = "Nullbody", long an = -1, double bal = 0.0, double ml = 500, double r = 0.11125);
+    BrassPlus(const Brass &br, double ml = 500, double r = 0.11125);
+    virtual void ViewAcct() const;
+    virtual void Withdraw(double amt);
+    void ResetMax(double m) { maxLoan = m; };
+    void ResetRate(double r) { rate = r; };
+    void ResetOwes() { owesBank = 0; };
+};
+
+#endif
diff --git a/chapter13/acctabc/usebrass3.cpp b/chapter13/acctabc/usebrass3.cpp
@@ -0,0 +1,58 @@
+#include <iostream>
+#include "acctabc.h"
+
+using namespace std;
+
+const int CLIENTS = 3;
+
+int main()
+{
+    AcctABC *p_clients[CLIENTS];
+
+    string temp;
+    long tempnum;
+    double tempbal;
+    char kind;
+    for (int i = 0; i < CLIENTS; i++)
+    {
+        cout << "Enter the client's name: ";
+        getline(cin, temp);
+        cout << "Enter client's account number: ";
+        cin >> tempnum;
+        cout << "Enter opening balance: $";
+        cin >> tempbal;
+        cout << "Enter 1 for Brass Account or 2 for BrassPlus Account: ";
+        while (cin >> kind && (kind != '1' && kind != '2'))
+            cout << "Enter either 1 or 2: ";
+        if (kind == '1')
+            p_clients[i] = new Brass(temp, tempnum, tempbal);
+        else
+        {
+            double tmax, trate;
+            cout << "Enter the overdraft limit: $";
+            cin >> tmax;
+            cout << "Enter the rate: ";
+            cin >> trate;
+            p_clients[i] = new BrassPlus(temp, tempnum, tempbal, tmax, trate);
+        }
+        while (cin.get() != '\n')
+            continue;
+    }
+
+    cout << endl;
+
+    for (int i = 0; i < CLIENTS; i++)
+    {
+        p_clients[i]->ViewAcct();
+        cout << endl;
+    }
+
+    for (int i = 0; i < CLIENTS; i++)
+    {
+        delete p_clients[i];
+    }
+
+    cout << "Done.\n";
+
+    return 0;
+}