#include <iostream>
using namespace std;

int main()
{
   char a[] = "string";
   cout << a << endl;
   a[0] = 'd';
   cout << a << endl;

   const char* sa = "literal string";
   cout << sa << endl;
   sa++;
   cout << sa << endl;
// sa[0] = 'd';   // error

   return 0;
}