Demonstrate const_cast. : const cast « Development « C++

1. C++
2. Development
3. const cast

Demonstrate const_cast.

#include <iostream>
using namespace std;

void sqrval(const int *val)
{
  int *p;

  
  p = const_cast<int *> (val);               // cast away const-ness.

  *p = *val * *val;                          // now, modify object through v
}

int main()
{
  int x = 22;

  cout << "x before call: " << x << endl;
  sqrval(&x);
  cout << "x after call: " << x << endl;

  return 0;
}



           
       

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