Add source code for OO Design (Ehtesham example)

ramtung · Nov 12, 2023 · b8972fa · b8972fa
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diff --git a/20-OODesign/Ehtesham-Handouts.pdf b/20-OODesign/Ehtesham-Handouts.pdf
diff --git a/20-OODesign/ehtesham1.cpp b/20-OODesign/ehtesham1.cpp
@@ -0,0 +1,58 @@
+#include <iostream>
+#include <vector>
+#include <string>
+#include <cstdlib>
+using namespace std;
+
+// Since we have not learned exception handling...
+void error(string message) {
+	cerr << message << endl;
+	abort();
+}
+
+class Employee {
+public:
+	Employee(string id, string n) {
+		if (id == "" || n == "") error("Employee ID and name cannot be empty");
+		emp_id = id;
+		name = n;
+		bedehi = 0;
+	}
+private:
+	int bedehi;
+	string emp_id;
+	string name;
+};
+
+class MenuItem {
+public:
+	MenuItem(string t, int p) {
+		if (t == "") error("Menu item title cannot be empty");
+		if (p <= 0) error("Menu item price must be positive");
+		title = t;
+		price = p;
+	}
+private:
+	string title;
+	int price;
+};
+
+class Catering {
+public:
+	Catering(string n, vector<MenuItem> m) {
+		if (n == "") error("Catering name must be non-empty");
+		name = n;
+		menu = m;
+	}
+private:
+	string name;
+	vector<MenuItem> menu;
+};
+
+int main() {
+	Catering farsi("Farsi", { MenuItem("Kabab", 50000), MenuItem("Jooj", 30000) });
+	Catering alaa("Alaa", { MenuItem("Kabab", 40000), MenuItem("Maahi", 35000) });
+	Employee jamshid("1001", "Jamshid");
+	Employee mahvash("1002", "Mahvash");
+	Employee hooshang("1003", "Hooshang");
+}
diff --git a/20-OODesign/ehtesham2.cpp b/20-OODesign/ehtesham2.cpp
@@ -0,0 +1,74 @@
+#include <iostream>
+#include <vector>
+#include <string>
+#include <cstdlib>
+using namespace std;
+
+// Since we have not learned exception handling...
+void error(string message) {
+	cerr << message << endl;
+	abort();
+}
+
+class Employee {
+public:
+	Employee(string id, string n) {
+		if (id == "" || n == "") error("Employee ID and name cannot be empty");
+		emp_id = id;
+		name = n;
+		bedehi = 0;
+	}
+private:
+	int bedehi;
+	string emp_id;
+	string name;
+};
+
+class MenuItem {
+public:
+	MenuItem(string t, int p) {
+		if (t == "") error("Menu item title cannot be empty");
+		if (p <= 0) error("Menu item price must be positive");
+		title = t;
+		price = p;
+	}
+private:
+	string title;
+	int price;
+};
+
+class Catering {
+public:
+	Catering(string n, vector<MenuItem> m) {
+		name = n;
+		menu = m;
+	}
+private:
+	string name;
+	vector<MenuItem> menu;
+};
+
+class Ehtesham {
+public:
+	Ehtesham(vector<Catering> c, vector<Employee> e) {
+		caterings = c;
+		employees = e;
+	}
+private:
+	vector<Catering> caterings;
+	vector<Employee> employees;
+};
+
+int main() {
+	Ehtesham ehtesham(
+		{
+			Catering("Farsi", { MenuItem("Kabab", 50000), MenuItem("Jooj", 30000) }),
+			Catering("Alaa", { MenuItem("Kabab", 40000), MenuItem("Maahi", 35000) })
+		},
+		{
+			Employee("1001", "Jamshid"),
+			Employee("1002", "Mahvash"),
+			Employee("1003", "Hooshang")
+		}
+	);
+}
diff --git a/20-OODesign/ehtesham3.cpp b/20-OODesign/ehtesham3.cpp
@@ -0,0 +1,86 @@
+#include <iostream>
+#include <vector>
+#include <string>
+#include <cstdlib>
+using namespace std;
+
+// Since we have not learned exception handling...
+void error(string message) {
+	cerr << message << endl;
+	abort();
+}
+
+class Employee {
+public:
+	Employee(string id, string n) {
+		if (id == "" || n == "") error("Employee ID and name cannot be empty");
+		emp_id = id;
+		name = n;
+		bedehi = 0;
+	}
+private:
+	int bedehi;
+	string emp_id;
+	string name;
+};
+
+class MenuItem {
+public:
+	MenuItem(string t, int p) {
+		if (t == "") error("Menu item title cannot be empty");
+		if (p <= 0) error("Menu item price must be positive");
+		title = t;
+		price = p;
+	}
+private:
+	string title;
+	int price;
+};
+
+class EmployeeRequest {
+public:
+	EmployeeRequest(Employee* e, MenuItem* m) {
+		if (e == NULL || m == NULL) error("Employee request parameters must be non-null");
+		item = m;
+		emp = e;
+	}
+private:
+	Employee* emp;
+	MenuItem* item;
+};
+
+class Catering {
+public:
+	Catering(string n, vector<MenuItem> m) {
+		name = n;
+		menu = m;
+	}
+private:
+	string name;
+	vector<MenuItem> menu;
+};
+
+class Ehtesham {
+public:
+	Ehtesham(vector<Catering> c, vector<Employee> e) {
+		caterings = c;
+		employees = e;
+	}
+private:
+	vector<Catering> caterings;
+	vector<Employee> employees;
+};
+
+int main() {
+	Ehtesham ehtesham(
+		{
+			Catering("Farsi", { MenuItem("Kabab", 50000), MenuItem("Jooj", 30000) }),
+			Catering("Alaa", { MenuItem("Kabab", 40000), MenuItem("Maahi", 35000) })
+		},
+		{
+			Employee("1001", "Jamshid"),
+			Employee("1002", "Mahvash"),
+			Employee("1003", "Hooshang")
+		}
+	);
+}
diff --git a/20-OODesign/ehtesham4.cpp b/20-OODesign/ehtesham4.cpp
@@ -0,0 +1,87 @@
+#include <iostream>
+#include <vector>
+#include <string>
+#include <cstdlib>
+using namespace std;
+
+// Since we have not learned exception handling...
+void error(string message) {
+	cerr << message << endl;
+	abort();
+}
+
+class Employee {
+public:
+	Employee(string id, string n) {
+		if (id == "" || n == "") error("Employee ID and name cannot be empty");
+		emp_id = id;
+		name = n;
+		bedehi = 0;
+	}
+private:
+	int bedehi;
+	string emp_id;
+	string name;
+};
+
+class MenuItem {
+public:
+	MenuItem(string t, int p) {
+		if (t == "") error("Menu item title cannot be empty");
+		if (p <= 0) error("Menu item price must be positive");
+		title = t;
+		price = p;
+	}
+private:
+	string title;
+	int price;
+};
+
+class EmployeeRequest {
+public:
+	EmployeeRequest(Employee* e, MenuItem* m) {
+		if (e == NULL || m == NULL) error("Employee request parameters must be non-null");
+		item = m;
+		emp = e;
+	}
+private:
+	Employee* emp;
+	MenuItem* item;
+};
+
+class Catering {
+public:
+	Catering(string n, vector<MenuItem> m) {
+		name = n;
+		menu = m;
+	}
+private:
+	string name;
+	vector<MenuItem> menu;
+	vector<EmployeeRequest> requests;
+};
+
+class Ehtesham {
+public:
+	Ehtesham(vector<Catering> c, vector<Employee> e) {
+		caterings = c;
+		employees = e;
+	}
+private:
+	vector<Catering> caterings;
+	vector<Employee> employees;
+};
+
+int main() {
+	Ehtesham ehtesham(
+		{
+			Catering("Farsi", { MenuItem("Kabab", 50000), MenuItem("Jooj", 30000) }),
+			Catering("Alaa", { MenuItem("Kabab", 40000), MenuItem("Maahi", 35000) })
+		},
+		{
+			Employee("1001", "Jamshid"),
+			Employee("1002", "Mahvash"),
+			Employee("1003", "Hooshang")
+		}
+	);
+}