simple c question

[if13121]

Dear All. I'm completely newbie to c. I make a function to copy string and get its length but it doestn't work. What is wrong with this program?

 typedef int IdxType;
  typedef struct {
	char TKata[20];
	int len;
  }kata;

  typedef struct
  {
	int DD;
	int MM;
	int YYYY;
  }date;
   typedef struct 
  {     
  	int TSize[100];              
	date TDate[100];		
  	kata TFile[100];    		
	int NBFile;            
  }  Tab;

void PrintTable(Tab T);
int NbElmt(Tab T);
void SetFile(Tab T, IdxType i,kata v);
void CopyKata ( kata  Tin , kata * Tout);
void getLen(kata L);

int main()
{
	date L;
 	Tab T;
	kata Input,v,aku;
  	T.TDate[1].DD   = 0;	T.TDate[1].MM   = 0;	T.TDate[1].YYYY = 0;
	T.TDate[2].DD   = 0;	T.TDate[2].MM   = 0;	T.TDate[2].YYYY = 0;
	Input.TKata[1] = 't';	Input.TKata[2] = '.';	Input.TKata[3] = 't';
	Input.TKata[4] = 'x';	Input.TKata[5] = 't';	Input.len = 5;
	T.TSize[1]=1;	T.TSize[2]=1;
	T.NBFile = 2;
	CopyKata(Input,&(T.TFile[1]));
	CopyKata(T.TFile[1],&(T.TFile[2]));
	PrintTable(T);
	printf("insert new file to  TOC\n");
	printf("Input file name: \n"); 
	scanf("%s",v.TKata);
	getLen(v);
	printf("file name length: %d\n",v.len);
	T.TDate[3].DD   = 0; T.TDate[3].MM   = 0; T.TDate[3].YYYY = 0;
	SetFile(T,3,v);
	T.NBFile = 3;
	T.TSize[3]=3;
	PrintTable(T);
	return 0;
}

void PrintTable(Tab T)
 {
    int i,j;
    printf("\nTable of Content\n");
   
    if (NbElmt(T) != 0 ) 
    {
    
    for (i = 1; i < (NbElmt(T)+1);i++)
      {
	 
         for (j = 1; j < (T.TFile[i].len + 1);j++)
         {
         printf("%c",T.TFile[i].TKata[j]);
         }
        
 	 printf("   %d",T.TSize[i]);
	
	 printf("   %d-"  ,T.TDate[i].DD);
	 printf("%d-"  ,T.TDate[i].MM);
	 printf("%d\n" ,T.TDate[i].YYYY);
      }
    }
    else 
    {printf("The table is empty\n");}
  }

int NbElmt(Tab T)
{
     return(T.NBFile);
}

 void SetFile(Tab T, IdxType i,kata v)
 {  	CopyKata(v,&(T.TFile[i]));
 }
  
void getLen(kata L)
{	
	int i=0;
	while(L.TKata[i] != '\0')
	{i++;}
	L.len = i-1;	  	
}

void CopyKata ( kata  Tin , kata *Tout)
{	
	int i;
	(*Tout).len = Tin.len;
	for (i = 1; i < (Tin.len +1);i++)
	{
	   (*Tout).TKata[i] = (Tin).TKata[i];
	}
	
}

[redhead]

Try to keep control of what you're passing between the different functions:

void getLen(kata L)
{	
	int i=0;
	while(L.TKata[i ] != '\0')
	{i++;}
	L.len = i-1;	  	
}

Here you're passing a copy of kata, not the object itself, so any assignment of L.len is lost on exit of function scope.

void getLen(kata* L)
{
  int i=0;
  while(L->TKata[i ] != '\0')
  {i++;}
  L->len = i-1;	  	
}
....
getLen(&v);

will do, what you possibly want here, where the len member of the passed kata is assigned the length (altho you're off by one)

When copying, you need to think in the same direction.
Altho your code does what it should do, theres way too much pointer to pointer arritmetic in it for my taste, instead you can use

void CopyKata (kata*  Tin , kata *Tout)
{	
  int i;
  Tout->len = Tin->len;
  for (i = 1; i < (Tin->len +1);i++)
  {
    Tout->TKata[i ] = Tin->TKata[i ];
  }
}
...
CopyKata(&Input, &T.TFile[1]);
CopyKata(&T.TFile[1], &T.TFile[2]);

Another thing, I dont like the SetFile() you're using, when passing Tab T to it, you're relying on the usual pass by value effect to handle everything you've put into the Tab struct.
A better way here, would be to use pass by reference aswell.

[Valmont]

if13121
Adding to redhead's comments:
You are mixing up who is responsible for what. You should give the struct(s) more responsibilities.
What is it that you want to achieve exactly. Do you just want a collection of Date objects with a name tag on each Date instance or something? Then I'll rewrite it with your permission.

[if13121]

Acctually i make a small program about directory simulation. Acctually i divide the program in some file. The table toc consist of file in the directory its size and its last modified date. I think to post my program i should make it in one file and just consist of several function that is not work. So i just assign the value of some variable above.
I'm sorry if i was wrong. Anyway thank you for the solution.