#include <iostream>

using namespace std;

int main() {

    // 申明
    cout << "Declaration" << endl;
    string cars[4] = {"Volvo", "BMW", "Ford", "Mazda"};
    cout << cars[0] << endl;

    // 修改
    cout << "Modificaiton" << endl;
    cars[0] = "Opel";
    cout << cars[0] << endl;

    // 循环
    cout << "for loop" << endl;
    string vehicles[5] = {"Volvo", "BMW", "Ford", "Mazda", "Tesla"};
    for (int i = 0; i < 5; i++) {
        cout << vehicles[i] << endl;
    }

    // 循环2
    cout << "for each loop" << endl;
    int myNumbers[5] = {10, 20, 30, 40, 50};
    for (int i : myNumbers) {
        cout << i << endl;
    }

    // 省略大小
    cout << "Omit size during declaration" << endl;
    string pc[3] = {"Lenovo", "HP", "Dell"}; // Also three arrays
    for (int i = 0; i < sizeof(pc) / sizeof(string); i++) {
        cout << pc[i] << endl;
    }

    // 获取大小
    cout << "Get size" << endl;
    cout << sizeof(pc) / sizeof(string) << endl;

    // 多维数组
    cout << "Loop multi-dimension" << endl;
    string letters[2][4] = {
        { "A", "B", "C", "D" },
        { "E", "F", "G", "H" }
    };
    cout << letters[0][2] << endl;

    // 循环多维数组
    for (int i = 0; i < 2; i++) {
        for (int j = 0; j < 4; j++) {
            cout << letters[i][j] << " ";
        }
        cout << endl;
    } 

}