Added todays oop practice

1 files changed, 155 insertions, 0 deletions

diff --git a/Year 1/Object-oriented Programming/04-Practice-15.02.2022.cpp b/Year 1/Object-oriented Programming/04-Practice-15.02.2022.cpp
new file mode 100644
index 0000000..4434162
--- /dev/null
+++ b/Year 1/Object-oriented Programming/04-Practice-15.02.2022.cpp
@@ -0,0 +1,155 @@
+#include <iostream>
+#include <fstream>
+#include <cstring>
+
+// Exercise 1
+
+int fileSize(std::ifstream& file) {
+	int currPos = file.tellg();
+	file.seekg(0, std::ios::end);
+	int size = file.tellg();
+	file.seekg(currPos, std::ios::beg);
+	return size;
+}
+
+void duplicate(const char* filePath, const char* newFile, int n) {
+	std::ifstream inFile(filePath);
+	int inFileSize = fileSize(inFile);
+	
+	std::ofstream outFile(newFile);
+	for (int i = 0; i < inFileSize * n; i++) {
+		outFile.put(inFile.get());
+
+		if (inFile.tellg() == inFileSize)
+			inFile.seekg(0, std::ios::beg);
+	}
+
+	outFile.close();
+	inFile.close();
+}
+
+void ex1() {
+	duplicate("dupeSrc.txt", "dupeDest.txt", 3);
+}
+
+// Exercise 2
+
+struct Task {
+	private:
+		char* name;
+		char* description;
+		int points;
+
+		void setStringProp(char*& prop, const char* newVal, int valSize) {
+			delete[] prop;
+			prop = new char[valSize];
+			for (int i = 0; i < valSize; i++)
+				prop[i] = newVal[i];
+		}
+	
+	public:
+		Task() {
+			Task("", "", 0);
+		}
+		Task(const char* name, const char* desc, int points) {
+			this->set_name(name, strlen(name));
+			this->set_description(desc, strlen(desc));
+			this->set_points(points);
+		}
+	
+		~Task() {
+			delete[] this->name;
+			delete[] this->description;
+		}
+
+		void writeToFile(std::ofstream& file) {
+			file.write(this->name, sizeof(this->name));
+			file.write(this->description, sizeof(this->description));
+			file.write((const char*)&this->points, sizeof(this->points));
+		}
+
+#pragma region
+		void set_name(const char* newName, int newNameSize) {
+			this->setStringProp(this->name, newName, newNameSize);
+		}
+		const char* get_name() const {
+			return this->name;
+		}
+
+		void set_description(const char* newDesc, int newDescSize) {
+			this->setStringProp(this->description, newDesc, newDescSize);
+		}
+		const char* get_description() const {
+			return this->description;
+		}
+
+		void set_points(int points) {
+			this->points = points;
+		}
+		int get_points() const {
+			return this->points;
+		}
+#pragma endregion
+};
+
+const int EXAM_TASK_CNT = 3;
+
+struct Exam {
+	private:
+		Task tasks[EXAM_TASK_CNT];
+		int passingPoints;
+
+	public:
+		Exam(const Task* elems) {
+			for (int i = 0; i < EXAM_TASK_CNT; i++)
+				this->tasks[i] = elems[i];
+		}
+
+		void writeToFile(std::ofstream& file) {
+			file.write((const char*)this, sizeof(Exam));
+		}
+		void writeToFile(const char* fileName) {
+			std::ofstream file(fileName, std::ios::binary);
+			this->writeToFile(file);
+			file.close();
+		}
+
+		void readFromFile(std::ifstream& file) {
+			// for (int i = 0; i < EXAM_TASK_CNT; i++)
+				// file.read(this->tasks[i],sizeof(this->tasks));
+		}
+		void readFromFile(const char* fileName) {
+			std::ifstream file(fileName, std::ios::binary);
+			this->readFromFile(file);
+			file.close();
+		}
+
+		void set_passingPoints(int points) {
+			this->passingPoints = points;
+		}
+		int get_passingPoints() const {
+			return this->passingPoints;
+		}
+	
+		int getMax() {
+			int acc = 0;
+			for (int i = 0; i < EXAM_TASK_CNT; i++)
+				acc += this->tasks[i].get_points();
+			return acc;
+		}
+};
+
+void writeToFile(const char* fileName, Exam& exam) {
+	std::ofstream file(fileName);
+
+}
+
+void ex2() {
+	Task t1("Wow1", "Bruh1", 5), t2("Wow2", "Bruh2", 5), t3("Wow3", "Bruh3", 5), tasks[EXAM_TASK_CNT] = { t1, t2, t3 };
+	Exam ex(tasks);
+	ex.writeToFile("test.txt");
+}
+
+int main() {
+	ex2();
+}