C++ sizeof关键字

sizeof 作用:统计数据类型所占内存大小
语法 sizeof(数据类型/变量)

#include <iostream>
using namespace std;


int main()
{

    cout << "short所占内存大小:" << sizeof(short) << endl;
    cout << "int所占内存大小:" << sizeof(int) << endl;
    cout << "long所占内存大小:" << sizeof(long) << endl;
    cout << "long long 所占内存大小:" << sizeof(long long) << endl;

    system("pause");

    return 0;
}