I need help with my function, this is what I have done.
void ShuffleCards(int (*deck_of_cards)[NUM_CARDS])
{
int i = 51;
int j, temp;
while(i>0)
{
j = rand()%(i+1);
temp = *deck_of_cards[i];
*deck_of_cards[i] = *deck_of_cards[j];
*deck_of_cards[j] = temp;
i--;
}
}
I have been getting segmentation fault because I'm unsure of what has to be coded properly before the swapping occurs. Help me please.
I suppose you are having an array of int used to represent a deck of card and you want to shuffle that array. First, you don't specify array size within the deck. Assuming NUM_CARDS = 52,
void ShuffleCards(int *deck_of_cards)
{
int i = NUM_CARDS - 1; //it is better to initialize i in term of NUM_CARDS
int j, temp;
while(i>0)
{
j = rand()%(i+1); //gives 0 to i
temp = deck_of_cards[i];
deck_of_cards[i] = deck_of_cards[j];
deck_of_cards[j] = temp;
i--;
}
}
Your calling function should look something like this:
int deck_of_cards[NUM_CARDS];
//do something to initialize your deck
ShuffleCards(deck_of_cards);
//do something with the shuffled deck;
