Character strings in C structures and TTree

From: Anton Fokin (dr_mamadu@mail.ru)
Date: Tue Jul 27 1999 - 20:44:28 MEST 

Hi rooters,

I wonder how to fill a tree with a C structure which contains cnaracter strings. If  I have 

typedef struct {
  char ticker[10];
  Int_t  adc1;
  Int_t  adc2;
} TData;

and do 

static TData Data;

  TBranch *branch = tree->Branch("Data",&Data,"ticker/C:adc1/I:adc2/I");

it doesn't work (well, as expected although) and to get it working I have to put my string variable at the bottom of the structure, i.e.

typedef struct {
  Int_t  adc1;
  Int_t  adc2;
  char ticker[10];

} TData;



Could you comment this? Also, could you tell me if it is possible to work with this character string in the TTree::Draw method? something like "ticker==MUMMY" or ...

Best,
Anton

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