Hi folks, I am trying to implement a function which reads from Serial Port ( Linux) and retuns char*. The function works fine but how would I store return value from function. example of function is

char  *ReadToSerialPort()
{
 char *bufptr;
 char buffer[256];  // Input buffer/ /
 //char *bufptr;      // Current char in buffer //
 int  nbytes;       // Number of bytes read //

 bufptr = buffer;

 while ((nbytes = read(fd, bufptr, buffer+sizeof(buffer)-bufptr -1 )) > 0)
 {
  bufptr += nbytes;
  //  if (bufptr[-1] == '\n' || bufptr[-1] == '\r')
  /*if ( bufptr[sizeof(buffer) -1] == '*' && bufptr[0] == '$' )
  {
   break;
  }*/

 } // while ends


 if ( nbytes ) return bufptr;
 else return 0;


 *bufptr = '\0';

} // end ReadAdrPort


//In main
int main( int argc , char *argv[])
{ 
  char *letter;
  if(strcpy(letter,  ReadToSerialPort()) >0 )
  {
   printf("Response is %s\n",letter);
  }
}