suggest me the way in which the array of structures

[srikar]

Hi in C
can any one suggest me the way in which the array of structures
needs to be declared , with out mentioning the size of the array.
eg like

static struct rwtable { /* reserved word table */
char * rw_name; /* representation */
int rw_yylex; /* yylex() value */
} rwtable[1000];

And also suggest me the way in which I can initaise this structure

Thanks & Regards

srikar

[srikar]

Hi all when i am using this declaration in my code

static struct rwtable { /* reserved word table */
char * rw_name; /* representation */
int rw_yylex; /* yylex() value */
} rwtable[]={
"", 0
};

I am getting warning like

warning: aggregate has a partly bracketed initializer

please help me to resolve this warning

[arne]

Hi all when i am using this declaration in my code

static struct rwtable { /* reserved word table */
char * rw_name; /* representation */
int rw_yylex; /* yylex() value */
} rwtable[]={
"", 0
};

I am getting warning like

warning: aggregate has a partly bracketed initializer

please help me to resolve this warning

Put curly braces around your initial values: {"",0}.

[Banfa]

If you add a well formed initialiser the is no need to give the array size. The compiler will size the array from the initialiser

static struct rwtable { /* reserved word table */
char * rw_name; /* representation */
int rw_yylex; /* yylex() value */
} rwtable[] = {
  {"FOR", 0},
  {"EACH", 1},
  {"UNTIL", 2}
};
 

The array will automatically have a size of 3.

[Banfa]

Please don't double post.

[srikar]

Hai Banfa Thanks for the reply.

Actually, I need to initialise all the values with zero.
I donot know the size of array.
I want to initialise all the structures with zero values.

please suggest in this way

[Banfa]

If you do not know the size of the array that suggests that you need to have some sort of dynamic array, in which case knowing how to initialise the array is irrelivent since all dynamic arrays work off pointers and memory allocation.

If you did have the structure given in the OP then you could use

static struct rwtable { /* reserved word table */
  char * rw_name; /* representation */
  int rw_yylex; /* yylex() value */
} rwtable[1000] = {0};
 

To initialise all members to 0.