6c807434   
   From: ulrich.eckhardt@dominolaser.com   
      
   Am 28.03.2012 21:07, schrieb fred.l.kleinschmidt@gmail.com:   
   > Is there such a thing as a "trailing null character" in a std::string?   
   > A std::string is not the same as a C string.   
      
   Yes, there is a null character. The first hint for that is the c_str()   
   function, which at least requires according space somewhere. Also,   
   consider the given code snippet:   
      
   >>      std::string s;   
   >>      char&c = s[0];    // well-defined   
      
   Normally, s[0] is an out-of-range access, since the string is empty.   
   However, this is an explicit exception.   
      
   Note that in the older C++ standard, accessing this null pointer was   
   only allowed via the const overload of operator[], so the above would   
   have been an error. Instead, you would have needed this:   
      
   std::string s;   
   std::string const& cs = s;   
   char const& c = cs[0];   
      
      
   Uli   
      
      
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