#include <iostream>
#include <stdio.h>
using namespace std;

// main() 是程序开始执行的地方

int main(){

    // 起始行
    cout << "---------------------------------" << endl;

    cout << "Size of char      : " << sizeof(char) << endl;
    cout << "Size of int       : " << sizeof(int) << endl;
    cout << "Size of short int : " << sizeof(short int) << endl;
    cout << "Size of long int  : " << sizeof(long int) << endl;
    cout << "Size of float     : " << sizeof(float) << endl;
    cout << "Size of double    : " << sizeof(double) << endl;
    cout << "Size of wchar_t   : " << sizeof(wchar_t) << endl;

    cout << "---------------------------------" << endl;

    /********************************************
     * 布尔型 1 个字节
     * 0 或者 1
     *******************************************/
    bool true_or_false;

    true_or_false = true;
    if (true_or_false) {
        // Output 01
        cout << "Output 01 | True (" << true_or_false << ")" << endl;
    }

    true_or_false = false;
    if (!true_or_false) {
        // Output 02
        cout << "Output 02 | False (" << true_or_false << ")" << endl;
    }

    /********************************************
     * 字符型 1 个字节
     * char          : -128 到 127 或者 0 到 255
     * unsigned char : 0 到 255
     *******************************************/
    char char_min, char_max, char_A, char_overflow;
    char_min = int(0);
    char_max = int(255);
    char_A = int(65);
    // char_overflow = int(256); // 将会产生数值溢出错误

    // Output 03
    cout << "Output 03 | Char Min is " << char_min << " (" << int(char_min) << ")" << endl;
    cout << "Output 04 | Char Max is " << char_max << " (" << int(char_max) << ")" << endl;
    cout << "Output 05 | Char A is " << char_A << " (" << int(char_A) << ")" << endl;
    // cout << "Output 05 | Char Overflow is " << char_overflow << " (" << int(char_overflow) << ")" << endl;

    /********************************************
     * 自定义类型
     * 使用 typedef 为一个已有的类型取一个新的名字
     *******************************************/
    typedef int feet;
    feet distance;
    distance = 123;
    cout << "Output 06 | distance is " << distance << endl;

    /********************************************
     * 枚举类型
     *******************************************/
    enum color { red, green, blue } c;
    c = green;
    cout << "Output 07 | Enum c is " << c << endl;

    // 结束行
    cout << "---------------------------------" << endl;

    return 0; 
}