C++: First message

#include <iostream>
#include <string>

using namespace std;

int main()
{
  string greeting = "Ifmmp!xpsme\"";
  
  for (string::const_iterator i = greeting.begin(); i != greeting.end(); ++i)
       cout << static_cast<char>((*i) - 1);
  
  cout << endl;
  return 0;
}

Hello, in this blog I want to publish some interesting information about C++ and other related topics (object oriented programming, generic programming, etc.); the idea is having this information useful and very accurate; so, since I am a fan of these topics but I am far from being an expert on them, I want you all to help me to improve the accuracy of every post I will write; therefore, your comments and suggestions will be really appreciated and will let me make the content of this blog better and better every day. Welcome and thank you for reading me.