c++中的数据类型—01整型

#include <iostream>
using namespace std;

int main() {
     
    /*整型： short       (2) 
             int       (4)
             long       (4)
             long long (8)
    //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;
    cout << "short占用内存空间为：" << sizeof(num1) << endl;

    int num2 = 10;
    cout << "int占用内存空间为：" << sizeof(int) << endl;

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

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

    //整型大小比较
    //short <int <=long <=long long

    system("pause");

    return 0;

}