"object of variable size may not be initialized" ?

dschinn

here you see following listing in C :

#include
#include
#include

#define addr 4194304

/* for-loop mit addr adresses */
int main(void)
{

int i;
int x;

for( i = 0; i<addr; i++ )
{
int x[i]=true;
if (i==addr)
break;else
continue; /* here should be a pointer with the aim for each address number to be set as true: int x[i]=true; */

}
return (0);
}

----------------------------------

yes, when I want to compile this, the error report of gcc in line 16 is:
"object of variable size may not be initialized"
it is probably not allowed to set an increasing index like i in x[i] as true.
means that then a pointer is necessary ...

how would be the solution for this ? I want that each counting step of i is set as true. Means each address should be set as true.

This programm would perform a platform-independent chip-update e.g. in bios on each mainboard.
No matter which manufactor and no matter which bios-chip.

I ask here, because I had the solution in 2005, but the solution got lost
because of new installation.

tuvm for reply.
cheers.
dschinn

KenJackson

Are you trying to write 4 million int-size 'true' values?
Probably not.
But I can't tell what the goal really is.

This line declares a single variable that's never initialized or used:
[b]int x;[/b]

This line attempts to declare an array of size [b]i[/b], which is a variable (which isn't allowed in C), and initialize the whole array to a single value:
[b]int x[i]=true;[/b]

If the goal is to write a single value to a single address, you might do it like this:
[b]unsigned char *p = (unsigned char *)addr;
*p = 1;[/b]

And there's no need to break or continue--that's what the for-loop does.