const局部變量存儲位置

//const局部變量

#include <iostream>
#include <string>

using namespace std;

int main(int argc, char *argv[])
{
    const int *p = NULL;
    
    {
        const int var1 = 10;
        p = &var1;
        cout << "var1 addr: " << &var1 << endl;
    }
    
    int var2 = 20;
    cout << "var2 addr: " << &var2 << endl;
    
    cout << *p << endl;
    
    return 0;    
}

運行結果

 

誰能給解釋一下爲什麼是這樣的結果？？？

---

#include <stdio.h>
#include <string.h>


int main(int argc, char *argv[])
{
    int *p = NULL;
    
    {
        const int var1 = 10;
        printf("var1 addr: %p\n",&var1);
        p = (int*)&var1;
        printf("p: %p\n",p);
    }
    
    int var2 = 20;
    printf("var2 addr: %p\n",&var2);
    
    printf("*p: %d\n",*p);
    
    *p = 30;
    printf("*p: %d\n",*p);
    
    return 0;    
}

結果