#include <iostream>

//数据类型存在的意义：
//给变量分配合适的内存空间

int main1()
{
	//整形
	//1、短整型
	short num1 = 10;

	//2、整形
	int num2 = 10;

	//3、长整型
	long num3 = 10;

	//4、长长整形
	long long num4 = 10;
	
	std::cout << "num1 =" << num1 << std::endl;
	std::cout << "num2 =" << num2 << std::endl;
	std::cout << "num3 =" << num3 << std::endl;
	std::cout << "num4 =" << num4 << std::endl;
	

	system("pause");

	return 0;
}