C++primer第五版 编写一段程序，输出每种内置类型所占空间的大小

本题目旨在练习sizeof运算符的使用以及熟悉各种内置类型所占空间的大小，并不难，因此直接附上程序：

// primer_4_9.cpp : Defines the entry point for the application.
// 编写一段程序，输出每种内置类型所占空间的大小

#include "stdafx.h"
#include
using namespace std;

int main()
{
	char char_a = 'a';
	int int_b = 20;
	short short_d = 30;
	long long_e = 40;
	float float_g = 60;
	double double_h = 70;
	long double longdouble_i = 80;
	cout << "size of char is: " << sizeof(char_a) << endl;
	cout << "size of int is: " << sizeof(int_b) << endl;
	cout << "size of short is: " << sizeof(short_d) << endl;
	cout << "size of long is: " << sizeof(long_e) << endl;
	cout << "size of float is: " << sizeof(float_g) << endl;
	cout << "size of double is: " << sizeof(double_h) << endl;
	cout << "size of long double is: " << sizeof(longdouble_i) << endl;

	system("pause");
	return 0;
}

结构如下：