CPlusPlusThings/basic_content/const/funciton_const/condition2/condition1.cpp

#include <iostream>
using namespace std;
int main() {
  int num = 0;
  int *const ptr = &num; // const指针必须初始化！且const指针的指向不能修改
  int *t = &num;
  *t = 1;
  cout << *ptr << endl;
}