Calculator.java with basic operations

Calculator.cpp

@@ -0,0 +1,27 @@
+#include <iostream>
+using namespace std;
+
+class Calculator {
+public:
+    int add(int a, int b) { return a + b; }
+    int subtract(int a, int b) { return a - b; }
+    int multiply(int a, int b) { return a * b; }
+    double divide(int a, int b) {
+        if (b == 0) {
+            cout << "Error: Division by zero!" << endl;
+            return 0;
+        }
+        return (double)a / b;
+    }
+};
+
+// Example usage
+int main() {
+    Calculator calc;
+    cout << "Add: " << calc.add(5, 3) << endl;
+    cout << "Subtract: " << calc.subtract(5, 3) << endl;
+    cout << "Multiply: " << calc.multiply(5, 3) << endl;
+    cout << "Divide: " << calc.divide(5, 3) << endl;
+    return 0;
+}
+

Student.cpp

@@ -0,0 +1,40 @@
+#include <iostream>
+#include <string>
+using namespace std;
+
+class Student {
+private:
+    int id;
+    string name;
+    double grade;
+
+public:
+    // Constructor
+    Student(int id, string name, double grade) {
+        this->id = id;
+        this->name = name;
+        this->grade = grade;
+    }
+
+    // Getters
+    int getId() { return id; }
+    string getName() { return name; }
+    double getGrade() { return grade; }
+
+    // Setters
+    void setId(int id) { this->id = id; }
+    void setName(string name) { this->name = name; }
+    void setGrade(double grade) { this->grade = grade; }
+
+    // Display
+    void display() {
+        cout << "ID: " << id << ", Name: " << name << ", Grade: " << grade << endl;
+    }
+};
+
+// Example usage
+int main() {
+    Student s1(1, "Alice", 95.5);
+    s1.display();
+    return 0;
+}