C++ Function Parameter Modify a String Parameter via Pointers

#include <iostream> 

using namespace std; 

void myFunction(string *realmessage) 
{ 
  (*realmessage)[6] = 'i'; 
  realmessage->replace(9, 1, ""); 
  realmessage->insert(18, "ad"); 
  realmessage->replace(15, 2, "in"); 
  realmessage->replace(23, 7, "!"); 
  realmessage->replace(4, 3, "ali"); 
} 

int main() //ww  w  .  j  a  v a2  s  . com
{ 
  string message = "this is a test test test test"; 
  cout << message << endl; 

  myFunction(&message); 
  cout << message << endl; 

  return 0; 
}