#include <stdio.h>
#include <iostream>
using namespace std;
class abc
{
private:
int a;
int b;
};
int main()
{
cout << "Hello, World!" << endl;
cout <<sizeof(abc)<<endl;
return 0;
}
class : 1
int a ; //4
int a,b; //8
原文：https://www.cnblogs.com/hshy/p/14683441.html