const小练习一则，把const int*去除常量性赋给int*

#include<iostream>using namespace std;int main(){  const int a=10; // a=1000;//error: assignment of read-only variable `a'   int b=a;  b=a+10;  const int *pInt=&b;  cout<<"*pInt: "<<*pInt<<endl;  pInt= &a;  cout<<"*pInt: "<<*pInt<<endl;  b=100;  pInt = &b;   cout<<"*pInt: "<<*pInt<<endl;  //int *p=&a;//error: invalid conversion from `const int*' to `int*'   int *p = (int*)&a;//强制类型转换，去除常量性   cout<<"*p: "<<*p<<endl;   //a=1000;//error: assignment of read-only variable `a'   getchar();  return 0;}

结果如下：

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