Yarr! It be International Talk like a Pirate Day!

A group of cunning and ruthless Space Pirates have managed to
steal the Astral Dattebayo from the Space Ninja’s village and
hidden it on one of the planets in our solar system. As the captain
of a rival vessel you are keen to acquire this valuable item for
yourself. You have “persuaded” a crew member of the rival ship to
give you the encrypted secret location (ygpsu) as well as
information about the key (its an integer between 1 and 10).
Unfortunately the crew member did not know which algorithm was
used to encrypt it. Knowing your rival captain as well as you do
you are sure that he either used the Caesar Cipher (moving each
character in the string forward as many characters as the key
specifies) or XOR encryption (applying XOR to each character in
the string using the key as the second operand).

Seeing that all Space Pirates are good at programming you devise
the following system.
• An abstract base class Encryption with a pure virtual
decrypt() method which returns a string. The constructor for
this class takes both the message and the key as
parameters.
• Derived classes for each algorithm which implement the
decrypt() method according to the message and key stored
in the class.
• A main program which populates a vector of type Encryption*
with instances of both derived classes with all possible key
values. Dynamic polymorphism is used to invoke the
appropriate algorithm. Since the return value is going to be
one of our solar system’s planets you are able to test each
decrypted message to see if it is one of these values.

#include <iostream>
#include <stdlib.h>
#include <vector>
#include <string>


using namespace std;

class Encryption
{
public:

virtual string Decrypt(string msg, int key);

private:

string msg;
int key;
};

class Caeser : public Encryption
{
Caeser::Decrypt(msg,key){

};

class XOR : public Encryption
{
};



int main(int argc, char *argv[])
{

system("PAUSE");
return 0;
}

Arrrr, how about showing some effort, matey?

Missin code tags and nary a spot o' effort? Walk the bleedin plank!

Seriously, you've done almost nothing and the little you did is wrong.

Here's a gift.



Now put yer back into it or yer fish food.