Implementing Theory

This exercise explores key concepts in Operating Systems, with a particular focus on how a program’s structure influences the performance (of demand paging).

You should:

• Carefully review the theoretical material.
• Apply the appropriate modifications to the provided source code (C++ file: code/main.cpp) for better system performance. Assume that memory page length of the Operating System is 3 units.
• Include comments in your code that clearly mention the principle applied in each change.

Optionally:

• Fork this repository.
• Rename source code file.
• Create a pull request once you’ve finished implementing your changes in the repository (=adding your file to the parent repository).

The source code:

#include<iostream>usingnamespacestd;intmain() {
// Predefined student details
string name = "Dio";
string surname = "Alex";
string student_id = "123456";
// 3x3 C-style array of marksint marks[3][3] = {
{86, 90, 78},
{88, 76, 92},
{81, 89, 84}
};
int number_of_rows = 3;
int number_of_columns = 3;
// Print student details
cout << "Name: " << name << endl;
cout << "Surname: " << surname << endl;
cout << "Student ID: " << student_id << endl;
cout << "\nMarks:" << endl;
// Print array contentsfor (int col = 0; col < number_of_columns; col++) {
for (int row = 0; row < number_of_rows; row++) {
cout << marks[row][col] << "";
}
cout << endl;
}
return0;
}