静态存储区内的变量在程序编译阶段已经分配好内存空间并初始化。这块内存在程序的整个运行期间都存在,它主要存放静态变量、全局变量和常量。
- 静态存储区内的常量分为全局常量和字符串常量,一经初始化,不可修改。局部常量存放于栈!!!!,其生命周期仅限于函数的执行过程。
#include <iostream>
using namespace std;
//全局变量
int g_a = 10;
int g_b = 10;
//全局常量
const int c_g_a = 10;
const int c_g_b = 10;
//全局静态变量
static int g_s_a = 10;
static int g_s_b = 10;
int main() {
cout << "********************************************" << endl;
//局部变量
int a = 10;
int b = 10;
//打印地址
cout << "局部变量a地址为: " << (int)&a << endl;
cout << "局部变量b地址为: " << (int)&b << endl;
cout << "全局变量g_a地址为: " << (int)&g_a << endl;
cout << "全局变量g_b地址为: " << (int)&g_b << endl;
cout << "********************************************" << endl;
//局部静态变量
static int s_a = 10;
static int s_b = 10;
cout << "局部静态变量s_a地址为: " << (int)&s_a << endl;
cout << "局部静态变量s_b地址为: " << (int)&s_b << endl;
cout << "全局静态变量s_a地址为: " << (int)&g_s_a << endl;
cout << "全局静态变量s_b地址为: " << (int)&g_s_b << endl;
cout << "********************************************" << endl;
cout << "字符串常量地址为: " << (int)&"hello world" << endl;
cout << "字符串常量地址为: " << (int)&"hello world1" << endl;
cout << "********************************************"<< endl;
const int c_l_a = 10;
const int c_l_b = 10;
cout << "局部常量c_l_a地址为: " << (int)&c_l_a << endl;
cout << "局部常量c_l_b地址为: " << (int)&c_l_b << endl;
cout << "全局常量c_g_a地址为: " << (int)&c_g_a << endl;
cout << "全局常量c_g_b地址为: " << (int)&c_g_b << endl;
system("pause");
return 0;
}
全局区
- 全局变量 静态变量(static) 全局常量(const) 字符串常量区 离得比较近
不在全局区
- 局部常量 和 局部变量 比较近