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;
}
