读程序--const

 

 

编译器会对const变量进行优化

#include <iostream>
using namespace std;
int main () {
    const int a = 10;
    const int *p = &a;
    //int a = 10;
    //int *p = &a;


    *(int *) p = 100;
    cout << p << " " << &a << endl;
    cout << a << endl;
    cout << *p << endl;

    return 0;

}