I was trying to initialise a array made by pointer:
the code I used was:
int c = 15;
Struct *Pointer[c] = {NULL};
but C give me a error message which says:
"message": "variable-sized object may not be initialized",
but when I change my code to:
Struct *Pointer[15] = {NULL};
it worked!
Is there any way to fix it? I can't use 15 instead of variable "c"
Cheers!
You need to make a loop to initialize the array:
for (int i = 0; i < c; i++)
Pointer[i] = NULL; // set all of these values to NULL
Now, Pointer will be of size c.
Also, this link may help, too: Array[n] vs Array[10] - Initializing array with variable vs real number
Variable length arrays may not be initialized in their declarations.
You can use the standard string function memset to initialize the memory occupied by a variable length array.
For example
#include <string.h>
//...
int c = 15;
Struct *Pointer[c];
memset( Pointer, 0, c * sizeof( *Pointer ) );
Pay attention to that variable length arrays shall have automatic storage duration that is they may be declared in a function and may not have the storage specifier static.