Help needed with File IO and structures (current code inside)

Hi, i know this has been asked a few times before, but even all the tutorials i have looked at and past threads can't make me understand.

Basically what i have got is a structure and a file which is created when a user 'logs in'. I am trying to read from this file directly into the structure, and then send it back again when the client quits to update any changed information. Here is what i have:

Code:

//The Structure

typedef struct
{
	int			level;	//user level
	int			points;	//user points
} client_aldarninfo_t;

//The logon function (ignore the fact it wont create the file if there isn't already one, also qboolean is valid)

qboolean client_login(edict_t *ent)
{
	FILE *file;

	if ((file = fopen(ent->client->pers.netname, "r")) == NULL) {
	gi.cprintf (ent, PRINT_HIGH, "Error: can't open file.\n");
    return 1;
	} 
	else 
	{

		int size = sizeof(client_aldarninfo_t);

		//file opened, lets read it into the structure
		fread(&ent->client->aldarn, size, 2, file);

		gi.cprintf (ent, PRINT_HIGH, "Hey, your level is: %d, and your points are: %d\n", ent->client->aldarn.level, ent->client->aldarn.points);

		return 0;
	}
}

ent->client->pers.netname is the clients username.

Here is an example of what happens with "example.txt" having this contents:

Code:

	
Code:
	
555
1
 
 Prints out: level: (big ASCII number), points: 49 (ASCII for 1)

Another example:

Code:

	
Code:
	
5
1
 
 Prints out: level: (big ASCII number), points: 0

Basically, i have no idea how to assign the variables in the structure to exactly the numbers in the text file, seeing as i have no way of knowing the size of them before hand. Any help is appreciated, and feel free to e-mail/instant message. Thanx!!

- Aldarn

If the file looks like you posted, then it cannot be read using fread(). fread() is for binary files, yours is a text file. try using fscanf() instead of fread()

Code:

fscanf(file, "%d %d", &ent->client->aldarn.level, &ent->client->aldarn.points);

Aha, thanks a lot! I'll post the results when im done if anyone else is interested / ever gets the same problem. Im going to try the dreaded writing now too lol .

Code:

fread(&ent->client->aldarn, size, 2, file);

I'm puzzled by the above statement. It indicates that you are reading 16 bytes into the memory address of ent->client->aldarn since your stock client_aldarninfo_t struct is 8 bytes in length. Thus, I would assume that you have allocated storage for two client_aldarninfo_t structs in your ent struct?

If this is the case, then I would assume you need two fscanf's to accomodate both allocated structs.