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@ -2,17 +2,52 @@ |
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#include <stdlib.h> |
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struct snake* add_snake(struct snake* snake,int x,int y){ |
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return NULL; |
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struct snake* head = calloc(1,sizeof(struct snake)); |
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head->x = x; |
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head->y = y; |
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head->next = snake; |
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return head; |
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} |
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struct snake* remove_snake(struct snake* snake){ |
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return NULL; |
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struct snake* remove_snake(struct snake* snake) { |
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if (snake == NULL) { |
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return NULL; |
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} |
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if (snake->next == NULL) { |
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free(snake); |
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return NULL; |
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} |
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struct snake* current = snake; |
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while (current->next->next != NULL) { |
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current = current->next; |
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} |
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free(current->next); |
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current->next = NULL; |
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return snake; |
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} |
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void free_snake(struct snake* sn){ |
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void free_snake(struct snake* sn) { |
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struct snake* current = sn; |
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struct snake* next; |
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while (current!= NULL) { |
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next = current->next; |
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free(current); |
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current = next; |
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} |
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} |
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int is_snake(struct snake* snake,int x,int y){ |
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while (snake != NULL) { |
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if (snake->x == x && snake->y == y) { |
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return 1; |
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} |
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snake = snake->next; |
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} |
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return 0; |
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} |
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