Thread: struct instance "undeclared" (first use in this function)

I'm having trouble getting some code to compile...the following code gives me the error:
'Chunk' undeclared (first use in this function)
when compiled with "make" in cygwin.

Code:

//create structure for holding chunk data
struct Chunk
{
	unsigned short ID; //first two bytes
	unsigned int size; //last four bytes
};

int main() {
        pspDebugScreenInit();
        SetupCallbacks(); 
        printf("3DS Loader version 0.1\n");
        printf("======================\n");
        printf("by David Reicher\n");

	//setup file name
        char* filename;
	filename = "ms0:/xwing.3ds";
	int fdin;
	

	//open file and start reading
	fdin = sceIoOpen(filename, PSP_O_RDONLY, 0777);
	if(fdin >= 0)
	{
		printf("File opened %s\n\n", filename);
		
		
		Chunk firstChunk;

		int bytes_read = 1;
		bytes_read = sceIoRead(fdin, &firstChunk->ID, sizeof(firstChunk->ID));
		printf("ID: 0x%x\n", firstChunk.ID);
		bytes_read = sceIoRead(fdin, &firstChunk->size, sizeof(firstChunk->size));
		printf("Chunksize: %u\n", firstchunk.size);
	}
	else
	{
		printf("Couldn't open %s\n", filename);
	}


	//wait for home button push, then exit
        sceKernelSleepThread();
        return 0;
}

I know I'm probably doing something stupid (I'm kind of a newbie), but could anyone give me some advice on where I'm going wrong?

Code:

Chunk firstChunk;

should be

Code:

struct Chunk firstChunk;

Thanks its working fine now (also the last "firstchunk" used should have been "firstChunk").