C++核心编程之内存分区详解

//程序的内存模型-内存四区-全局区
#include <iostream>
using namespace std;
//1 全局变量
int g_a = 10;
int g_b = 10;
//const修饰的全局变量，全局常量
const int c_g_a = 10;
const int c_g_b = 10;
int main() {
    //2 创建普通局部变量
    int a = 10;
    int b = 10;
    cout << "The address of local variable a is: " << &a << endl;
    cout << "The address of local variable b is: " << &b << endl;
    cout << "Global variable g_a's address is: " << &g_a << endl;
    cout << "Global variable g_b's address is: " << &g_b << endl;
    //3 静态变量 在普通变量前面加static，属于静态变量
    static int s_a = 10;
    static int s_b = 10;
    cout << "The address of static variable s_a is: " << &s_a << endl;
    cout << "The address of static variable s_b is: " << &s_b << endl;
    //4 常量
    //4.1 字符串常量
    cout << "The address of the string constant is: " << &"Hello World" << endl;
    //4.2 const修饰的变量
    //4.2.1 const修饰的全局变量
    cout << "Global constant c_g_a's address is: " << &c_g_a << endl;
    cout << "Global constant c_g_b's address is: " << &c_g_b << endl;
    //4.2.2 const修饰局部变量
    const int c_l_a = 10;
    const int c_l_b = 10;
    cout << "Local constant c_l_a's address is: " << &c_l_a << endl;
    cout << "Local constant c_l_b's address is: " << &c_l_b << endl;
    return 0;
}