Create students_to_binary.cpp

1 files changed, 78 insertions, 0 deletions

diff --git a/Sem. 03/students_to_binary.cpp b/Sem. 03/students_to_binary.cpp
new file mode 100644
index 0000000..f2f20dd
--- /dev/null
+++ b/Sem. 03/students_to_binary.cpp
@@ -0,0 +1,78 @@
+#include <iostream>
+#include <fstream>
+#pragma warning(disable:4996)
+using namespace std;
+
+
+struct Student
+{
+	char* name;
+	int age;
+	int fn;
+};
+
+void saveStudent(ofstream& file, const Student& st)
+{
+	size_t nameLen = strlen(st.name) + 1;
+	file.write((const char*)&nameLen, sizeof(nameLen));
+	file.write(st.name, nameLen);
+	file.write((const char*)&st.age, sizeof(st.age));
+	file.write((const char*)&st.fn, sizeof(st.fn));
+}
+
+void loadStudent(ifstream& file, Student& st)
+{
+	size_t nameLen;
+	file.read((char*)&nameLen, sizeof(nameLen));
+
+	st.name = new char[nameLen];
+	file.read(st.name, nameLen);
+
+	file.read((char*)&st.age, sizeof(st.age));
+	file.read((char*)&st.fn, sizeof(st.fn));
+
+}
+
+int main()
+{
+
+	{ //writing students to binary file
+
+		Student s1;
+		s1.name = new char[5];
+		strcpy(s1.name, "ivan");
+		s1.fn = 9999;
+		s1.age = 30;
+
+
+		Student s2;
+		s2.name = new char[6];
+		strcpy(s2.name, "angel");
+		s2.fn = 5555;
+		s2.age = 50;
+
+		ofstream file("Students.dat", ios::binary);
+		saveStudent(file, s1);
+		saveStudent(file, s2);
+
+		delete[] s1.name, s2.name;
+	}
+
+	{
+		ifstream file("Students.dat", ios::binary);
+		Student s1, s2;
+
+		loadStudent(file, s1);
+		loadStudent(file, s2);
+		std::cout << s1.name << " " << s1.age << " " << s1.fn << std::endl;
+		std::cout << s2.name << " " << s2.age << " " << s2.fn << std::endl;
+
+		delete[] s1.name, s2.name;
+	}
+
+
+
+	
+
+
+}