Cpp-learning/数据类型1/2、sizeof.cpp

#include <iostream>

int main2()
{
	//整形 ：short  2bytes  int  4bytes   long   4bytes   long long  8bytes  
	//可以利用sizeof求出数据类型占用内存大小
	//语法： sizeof(数据类型 / 变量)

	short num1 = 10;
	std::cout << "short占用的内存空间为：" << sizeof(short) << std::endl;

	int unm2 = 10;
	std::cout << "int占用的内存空间为：" << sizeof(int) << std::endl;

	long num3 = 10;
	std::cout << "long占用的内存空间为：" << sizeof(long) << std::endl;

	long long num4 = 10;
	std::cout << "long占用的内存空间为：" << sizeof(long) << std::endl;

	//整形大小比较
	//short < int <= long <= long long 

	system("pause");

	return 0;
}