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jleeothon/stack.c

Created November 2, 2014 20:41
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Simple stack in C
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stack.c
/* for any stack in the form... */
int _s[100];
int *s = _s; /* top of the pending stack (this location empty) */
/* be very careful about passing expressions for a stack, not well guarded */
#define isempty(s) ((s) - (_s))
#define push(s, v) (*s++ = (v))
#define pop(s) (*(--s))
#define peek(s) ((s)[-1])
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