Structs

**gsoft** · 01-07-2005

I am currently using a struct to store players name, betting information for a simple Black Jack game.

Code:

struct player {
	char name[80];
	char *hand[10];
	int wins;
	int draw; 
	int lost;
	float money;
	float currentbet;
};

Defined for 4 players

Code:

struct player players[4];

Now the players all get 1000 assigned to the money, however when they get to 0 in the money I have this figured out, however I wish to delete them so e.g If its player 2
players[1] is deleted.

Now my questions are

1) How do i delete this would i assign a pointer to players[1] and then use free?
2) When i delete the player what is going to happen to the above indexes would I require to copy them all into a temp array and then copy them back to the smaller array structure?

Sorry if this is confusing for anyone reading, I am quite confused on how to accomplish this.

**misplaced** · 01-07-2005

i don't think you can delete memory that you did not create.......

my suggestion is to look up "malloc" for dynamic memory creation and then "free" to delete it (it might not be "free", i forget, it's been a while since i've done c)

**Thantos** · 01-07-2005

Look up linked lists and/or binary trees

Basically you'd store the players in a list adding them as more come in and deleting them as they leave.

And yes its malloc to allocate and free to deallocate.

**gsoft** · 01-07-2005

I was afraid Id require a linked list makes things a lot harder, oh well i better read up on it.

**Rare177** · 01-07-2005

one thing you could do if you dont want to use a linked list is have a bool checking if it is used or not, something along these lines

Code:

struct player {
	char name[80];
	char *hand[10];
	int wins;
	int draw; 
	int lost;
	float money;
	float currentbet;

        BOOL used;
};

struct player players[4];

then when checking an item you could do something alone the lines of..

Code:

for(i = 0; i <=4; i++)
{
	if(players[i].used == TRUE)
	{
		//do whats needed
	}
}

and when you want to delete an item set the bool to false.

**prog-bman** · 01-07-2005

BOOL is not a c type. I believe its a macro in <windows.h> if i remeber correctly.

**Rare177** · 01-07-2005

sorry my bad, your right, im just use to using windows.h alot, instead of using a BOOL you could just use an integer

Code:

int used;

and use 1 and 0 for true and false, that will also work

**quzah** · 01-07-2005

Or use C99 and _Bool.

Quzah.

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