Why OOP?

#define MAX 100

typedef struct {

int top;

int val[MAX];

} STACK

typedef STACK *STACK_PTR;

void init(STACK_PTR sp);

void push(STACK_PTR sp, int x);

int pop(STACK_PTR sp);

int isEmpty(STACK_PTR sp);

• What are the problems?

  • Still not generic
    • What happens if a stack of another type is needed?
  • Fixed size
  • No effective information hiding

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