Implemented Student Record System

tree/main/Examples/StudentRecordSystem.cpp

@@ -0,0 +1,156 @@
+#include <iostream>
+#include <string>
+#include <vector>
+using namespace std;
+
+class Student {
+private:
+    string name;
+    int age;
+    string* subjects;  // Dynamic array for subject names
+    float* marks;      // Dynamic array for marks
+    int numSubjects;   // Number of subjects
+
+public:
+    // Constructor to initialize the student with name, age, and subjects
+    Student(string studentName, int studentAge, int numSubjects) {
+        name = studentName;
+        age = studentAge;
+        this->numSubjects = numSubjects;
+
+        // Allocate memory for subjects and marks
+        subjects = new string[numSubjects];
+        marks = new float[numSubjects];
+
+        cout << "Enter names of subjects and marks (out of 100) for " << name << ":\n";
+        for (int i = 0; i < numSubjects; ++i) {
+            cout << "Subject " << (i + 1) << ": ";
+            cin >> subjects[i];
+            cout << "Marks for " << subjects[i] << ": ";
+            cin >> marks[i];
+        }
+    }
+
+    // Destructor to free dynamically allocated memory
+    ~Student() {
+        delete[] subjects;
+        delete[] marks;
+        cout << "Student record for " << name << " deleted.\n";
+    }
+
+    // Method to calculate total score
+    float totalScore() const {
+        float total = 0;
+        for (int i = 0; i < numSubjects; ++i) {
+            total += marks[i];
+        }
+        return total;
+    }
+
+    // Method to display student details
+    void displayDetails() const {
+        cout << "Name: " << name << "\n";
+        cout << "Age: " << age << "\n";
+        cout << "Subjects and Marks:\n";
+        for (int i = 0; i < numSubjects; ++i) {
+            cout << subjects[i] << ": " << marks[i] << "/100\n";
+        }
+        cout << "Total Score: " << totalScore() << "/" << numSubjects * 100 << "\n"; // Display total score
+    }
+};
+
+// Global vector to store student records
+vector<Student*> students;
+
+// Function to add a new student
+void addStudent() {
+    string name;
+    int age, numSubjects;
+
+    cout << "Enter student's name: ";
+    cin >> name;
+    cout << "Enter student's age: ";
+    cin >> age;
+    cout << "Enter number of subjects: ";
+    cin >> numSubjects;
+
+    // Create a new Student object dynamically and add to the list
+    Student* newStudent = new Student(name, age, numSubjects);
+    students.push_back(newStudent);
+}
+
+// Function to display all student records
+void displayStudents() {
+    if (students.empty()) {
+        cout << "No student records available.\n";
+        return;
+    }
+
+    cout << "Student Records:\n";
+    for (size_t i = 0; i < students.size(); ++i) {
+        cout << "\nRecord " << i + 1 << ":\n";
+        students[i]->displayDetails();
+    }
+}
+
+// Function to delete a student record by index
+void deleteStudent() {
+    if (students.empty()) {
+        cout << "No student records to delete.\n";
+        return;
+    }
+
+    int index;
+    cout << "Enter the record number to delete: ";
+    cin >> index;
+
+    if (index < 1 || index > students.size()) {
+        cout << "Invalid record number.\n";
+        return;
+    }
+
+    // Delete the student object and remove from the list
+    delete students[index - 1];
+    students.erase(students.begin() + (index - 1));
+
+    cout << "Student record deleted successfully.\n";
+}
+
+// Main function to handle the menu-driven interface
+int main() {
+    int choice;
+
+    do {
+        cout << "\nStudent Record System Menu:\n";
+        cout << "1. Add Student\n";
+        cout << "2. Display All Students\n";
+        cout << "3. Delete Student\n";
+        cout << "4. Exit\n";
+        cout << "Enter your choice: ";
+        cin >> choice;
+
+        switch (choice) {
+            case 1:
+                addStudent();
+                break;
+            case 2:
+                displayStudents();
+                break;
+            case 3:
+                deleteStudent();
+                break;
+            case 4:
+                cout << "Exiting the program.\n";
+                break;
+            default:
+                cout << "Invalid choice. Please try again.\n";
+        }
+    } while (choice != 4);
+
+    // Clean up any remaining student records before exiting
+    for (Student* student : students) {
+        delete student;
+    }
+
+    return 0;
+}