محمد عبد الكاظم سلمان
المرحلة االولى
هندسة الشبكات واالمن صباحي
( السيبرانيB)
Homework 1: Student Management System
Focus: Classes, basic menu-driven program
Description:
Create a console application that manages student records using a
student class.
Each student has: ID, Name, Age, and Average.
Requirements:
• Add new student
• Display all students
Bonus:
• Search by ID
• Sort by GPA
Solution
#include <iostream>
#include <string>
using namespace std;
class Student {
public:
int id;
string name;
int age;
float average;
void input() {
cout << "Enter ID: ";
cin >> id;
cout << "Enter Name: ";
cin.ignore();
getline(cin, name);
cout << "Enter Age: ";
cin >> age;
cout << "Enter GPA: ";
cin >> average;
}
};
int main() {
const int MAX = 100;
Student students[MAX];
int count = 0;
int choice;
do {
cout << "\n--- Student Management System ---\n";
cout << "1. Add New Student\n";
cout << "2. Display All Students\n";
cout << "3. Search by ID\n";
cout << "4. Sort by GPA\n";
cout << "0. Exit\n";
cout << "Enter your choice: ";
cin >> choice;
if (choice == 1) {
if (count >= MAX) {
cout << "Student list is full.\n";
} else {
students[count].input();
count++;
}
}
else if (choice == 2) {
if (count == 0) {
cout << "No students to display.\n";
} else {
for (int i = 0; i < count; ++i) {
cout << "ID: " << students[i].id
<< ", Name: " << students[i].name
<< ", Age: " << students[i].age
<< ", GPA: " << students[i].average << endl;
}
}
}
else if (choice == 3) {
int searchId;
cout << "Enter ID to search: ";
cin >> searchId;
bool found = false;
for (int i = 0; i < count; ++i) {
if (students[i].id == searchId) {
cout << "ID: " << students[i].id
<< ", Name: " << students[i].name
<< ", Age: " << students[i].age
<< ", GPA: " << students[i].average << endl;
found = true;
break;
}
}
if (!found) {
cout << "Student with ID " << searchId << " not found.\n";
}
}
else if (choice == 4) {
for (int i = 0; i < count - 1; ++i) {
for (int j = i + 1; j < count; ++j) {
if (students[i].average < students[j].average) {
Student temp = students[i];
students[i] = students[j];
students[j] = temp;
}
}
}
cout << "Students sorted by GPA (descending).\n";
}
else if (choice == 0) {
cout << "Exiting program.\n";
}
else {
cout << "Invalid choice. Try again.\n";
}
} while (choice != 0);
return 0;
}
Homework 3: Calculator Program
Focus: Functions, conditionals, switch-case
Description:
Write a C++ program that acts as a basic calculator to perform
arithmetic operations.
Requirements:
Ask the user to input two numbers
Ask the user to choose an operation: +, -, *, /
Use a switch statement to perform the operation
Display the result
Solution
#include <iostream>
using namespace std;
int main() {
double num1, num2, result;
char op;
cout << "Enter first number: ";
cin >> num1;
cout << "Enter second number: ";
cin >> num2;
cout << "Enter operation (+, -, *, /): ";
cin >> op;
switch (op) {
case '+':
result = num1 + num2;
cout << "Result: " << result << endl;
break;
case '-':
result = num1 - num2;
cout << "Result: " << result << endl;
break;
case '*':
result = num1 * num2;
cout << "Result: " << result << endl;
break;
case '/':
if (num2 != 0) {
result = num1 / num2;
cout << "Result: " << result << endl;
} else {
cout << "Error: Division by zero is not allowed." << endl;
break;
default:
cout << "Invalid operation!" << endl;
}
return 0;
