C++复习

#include 
  
   
using namespace std;

typedef unsigned short int USHORT;					//创建别名，可以将下面中使用的unsigned short int都用USHORT替换
const unsigned short int StudentPerClass = 15;		//C++中定义常量使用const 而不应该用define
enum COLOR{RED,BLUE =100 ,GREEN,WHITE =500,BLACK};  //创建枚举常量，RED成为一个符号常量，值为0，后面的依次为100 101 500 501

int main()
{
	std::cout << "Hello World" << std::endl;
	std::cout << '\t';							    // \t为制表符 输出的内容为8个空格
	cout << sizeof(char) << sizeof(short) << sizeof(int) << sizeof(float) << sizeof(long) << sizeof(double) << endl; //124448
	USHORT Width = 5;
	cout << Width << sizeof(USHORT)<