Programmers and hackers

"ProgramHackers are used to follow the existing restrictions to add existing things. hackers are used to using existing things to break the existing restrictions ." In this article, I used a simple program as a metaphor to illustrate two different ideas for programmers and hackers to solve problems.

Statement: This article is reprinted, and the example knowledge is used to illustrate the problem.

Question:

The following C ++ class is provided:

Class
{
Int value;
Public:
A (INT n = 0): Value (n ){}
Int getvalue ()
{
Return value;
}
};

 

Please use some method to change the value of private member A: value outside the class.

Possible practices of programmers:

Class
{
Int value;
Public:
A (INT n = 0): Value (n ){}
Int getvalue ()
{
Return value;
}
Void setvalue (int n)
{
Value = N;
}
};

Void F ()
{
A;
A. setvalue (5 );
}

Possible hacker practices:

Void F ()
{
A;
* (Int *) & A) = 5;
}

Conclusion:

Programmers are used to adding existing things by following existing restrictions.

Hackers are used to breaking existing restrictions by using existing things.