From 51f517bf92ce0aa616de37dd73074ce3e3579875 Mon Sep 17 00:00:00 2001
From: Angeld55 <angel_dimitriev@abv.bg>
Date: Fri, 5 Mar 2021 14:39:17 +0200
Subject: sem 2

---
 Sem. 02/README.md            |  52 ++++++++++++++++++
 Sem. 02/notes_02.pdf         | Bin 0 -> 75732 bytes
 Sem. 02/selfPrintingTask.cpp |  26 +++++++++
 Sem. 02/studentsDatabase.cpp | 124 +++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 202 insertions(+)
 create mode 100644 Sem. 02/README.md
 create mode 100644 Sem. 02/notes_02.pdf
 create mode 100644 Sem. 02/selfPrintingTask.cpp
 create mode 100644 Sem. 02/studentsDatabase.cpp

diff --git a/Sem. 02/README.md b/Sem. 02/README.md
new file mode 100644
index 0000000..b59d8ac
--- /dev/null
+++ b/Sem. 02/README.md	
@@ -0,0 +1,52 @@
+
+
+##  Сруктури
+
+Структурите в C++ се използват за групиране на елементи. Елементите, наричани още членове, могат да бъдат от различен тип и с различна дължина.
+
+    struct Box
+    {
+		int height;
+		int weight;
+	}
+
+
+###  Деклариране на обекти от новия тип
+
+    Box b; //default values to height and weight
+    
+    Box b2 = {3, 4} // height = 3, weight = 3;
+    
+    Box b3;
+    b3.height = 13;
+    b3.weight = 14;
+
+	
+###  Подаване във функции
+Ако няма да променяме обекта го подаваме по **константна референция.**
+
+    void calculcateArea(const Box& b)
+    {
+	    return b.height * b.weight;
+    }
+   Може и само по **референция**, но тогава промените ще се отразят върху подадения аргумент.
+   
+
+    void readBox(Box& b)
+    {
+	    cin >> b.height >> b.weight;
+    }
+.Може и да го подаваме по **копие**.
+
+    Box revertBox(Box b)
+    {
+	    int temp = b.height;
+	    b.height = b.weight;
+	    b.weight = temp;
+	    
+	    return b;
+	}
+**Задача**:
+Вход: Въвежда се цяло число **N**  и после **N** тригъгълника в равнината, определени от 3 точки ( 6 координати).
+
+Отпечатайте тригълниците **сортирани по лицата им.**
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diff --git a/Sem. 02/notes_02.pdf b/Sem. 02/notes_02.pdf
new file mode 100644
index 0000000..a7372af
Binary files /dev/null and b/Sem. 02/notes_02.pdf differ
diff --git a/Sem. 02/selfPrintingTask.cpp b/Sem. 02/selfPrintingTask.cpp
new file mode 100644
index 0000000..e269707
--- /dev/null
+++ b/Sem. 02/selfPrintingTask.cpp	
@@ -0,0 +1,26 @@
+#include <iostream>
+#include <fstream>
+
+using namespace std;
+
+const int MAX_SIZE = 1024;
+int main()
+{
+	ifstream inputFile("selfPrintingTask.cpp");
+	
+	if (inputFile.fail())
+	{
+		cout << "Error!" << endl;
+		return -1;
+	}
+	
+	while (!inputFile.eof())
+	{
+		char buff[MAX_SIZE];
+		inputFile.getline(buff, MAX_SIZE);
+		cout << buff << endl;
+	}
+
+
+	return 0;
+}
\ No newline at end of file
diff --git a/Sem. 02/studentsDatabase.cpp b/Sem. 02/studentsDatabase.cpp
new file mode 100644
index 0000000..ba3e420
--- /dev/null
+++ b/Sem. 02/studentsDatabase.cpp	
@@ -0,0 +1,124 @@
+#include <iostream>
+#include <fstream>
+
+using namespace std;
+
+const int FIELD_MAX_SIZE = 50;
+const int BUFFER_LINE_SIZE = 1024;
+
+struct OOPstudent
+{
+	char firstName[FIELD_MAX_SIZE];
+	char lastName[FIELD_MAX_SIZE];
+	char email[FIELD_MAX_SIZE];
+	int fn;
+
+};
+
+int countLines(const char* fileName)
+{
+	ifstream f(fileName);
+	if (!f.is_open())
+		return -1;
+	int linesCount = 0;
+
+	while (!f.eof())
+	{
+		char buff[1024];
+		f.getline(buff, 1024);
+		linesCount++;
+	}
+	f.close();
+
+	return linesCount;
+	
+}
+// abc,bcd,ab@Abv.bg,fn
+void readStudent(const char* input, OOPstudent& student)
+{
+	int ind = 0;
+
+	// first name
+	while (input[ind] != ',')
+	{
+		student.firstName[ind] = input[ind];
+		ind++;
+	}
+	student.firstName[ind] = '\0';
+	ind++;
+
+	//last name
+	int lastNameInd = 0;
+	while (input[ind] != ',')
+		student.lastName[lastNameInd++] = input[ind++];
+	student.lastName[lastNameInd] = '\0';
+	ind++;
+
+	//email
+	int emailInd = 0;
+
+	while (input[ind] != ',')
+		student.email[emailInd++] = input[ind++];
+	student.email[emailInd] = '\0';
+
+	//fn
+	//??
+}
+
+void saveStudentsToFile(const OOPstudent* studentsCollection,int len,  const char* fileName)
+{
+	ofstream outFile(fileName);
+
+	if (!outFile.is_open())
+		return;
+
+	for (int i = 0; i < len; i++)
+		outFile << studentsCollection[i].firstName << " " << studentsCollection[i].lastName << " " << studentsCollection[i].email << endl;
+
+	outFile.close();
+}
+
+int main()
+{
+
+	int studentsCount = countLines("students.csv") - 1; // We ignore the first line 
+
+	OOPstudent* studentsCollection = new OOPstudent[studentsCount]; 
+
+	ifstream f("students.csv");
+
+	if (!f.is_open())
+	{
+		cout << "Error!" << endl;
+		delete[] studentsCollection;
+		return -1;
+	}
+
+	int line = 1;
+	while (!f.eof())
+	{
+		char buff[BUFFER_LINE_SIZE];
+		f.getline(buff, BUFFER_LINE_SIZE);
+
+		if (line == 1)
+		{
+			line++;
+			continue;
+		}
+
+		readStudent(buff, studentsCollection[line - 2]);
+		line++;
+	}
+	f.close();
+
+
+	//Do stuff
+
+	saveStudentsToFile(studentsCollection, studentsCount, "result.txt");
+
+
+	
+
+	delete[] studentsCollection;
+	return 0;
+}
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