#include <iostream>
#include <vector>
#include <string>

struct MarksRecord {
    std::string name;
    int maths_marks, chinese_marks, english_marks;
};

std::vector<MarksRecord> records;

void print_menu() {
    std::cout << "Mark Record System\n";
    std::cout << "-----------------\n";
    std::cout << "1. Add marks record\n";
    std::cout << "2. Delete marks record\n";
    std::cout << "3. Edit marks record\n";
    std::cout << "4. Print current marks record in system\n";
    std::cout << "E. Exit\n";
    std::cout << "Enter your choice: ";
}

void functionAdd() {
    MarksRecord record;
    std::cout << "Enter name: ";
    std::cin >> record.name;
    std::cout << "Enter maths marks: ";
    std::cin >> record.maths_marks;
    std::cout << "Enter chinese marks: ";
    std::cin >> record.chinese_marks;
    std::cout << "Enter english marks: ";
    std::cin >> record.english_marks;
    records.push_back(record);
}

void functionDelete() {
    std::string name;
    std::cout << "Enter name to delete: ";
    std::cin >> name;
    for (size_t i = 0; i < records.size(); i++) {
        if (records[i].name == name) {
            records.erase(records.begin() + i);
            break;
        }
    }
}

void functionEdit() {
    std::string name;
    std::cout << "Enter name to edit: ";
    std::cin >> name;
    for (size_t i = 0; i < records.size(); i++) {
        if (records[i].name == name) {
            std::cout << "Enter new maths marks: ";
            std::cin >> records[i].maths_marks;
            std::cout << "Enter new chinese marks: ";
            std::cin >> records[i].chinese_marks;
            std::cout << "Enter new english marks: ";
            std::cin >> records[i].english_marks;
            break;
        }
    }
}


void functionPrint() {
    for (const auto& record : records) {
        std::cout << "Name  Maths     Chinese     English     Grade " << "\n";
        std::cout << record.name << "   "
          << record.maths_marks << "   "
          << record.chinese_marks << "   "
          << record.english_marks << "   "
          << "\n";
        std::cout << "\n";
    }
}

int main() {
    char choice;
    while (true) {
        print_menu();
        std::cin >> choice;

        switch (choice) {
            case '1':
                functionAdd();
                break;
            case '2':
                functionDelete();
                break;
            case '3':
                functionEdit();
                break;
            case '4':
                functionPrint();
                break;
            case 'E':
            case 'e':
                return 0;
            default:
                std::cout << "Invalid choice. Please try again.\n";
        }
    }

    return 0;
}