还是参考了别人的代码,不过比我自己写出来的确实是要简洁的多,不过仍然有不规范的地方,但是仍然值得我学习一下,在敲打的时候也是受到了一定的启发。
#include <stdio.h>
#include <stdlib.h>
#define FULL 1000
#define EMPTY 0
typedef char data;
struct elem
{
data d;
struct elem *next;
};
struct stack
{
int cnt;
struct elem *top;
};
void initialize(stack *stk);
void push(stack *stk, data d);
data pop(stack *stk);
data top(stack *stk);
bool empty(stack *stk);
bool full(stack *stk);
int main(void)
{
system("pause");
}
void initialize(stack *stk)
{
stk->cnt = 0;
stk->top = NULL;
}
void push(stack *stk, data d)
{
elem *p;
p = (elem *)malloc(sizeof(elem));
p->d = d;
p->next = stk->top;
stk->top = p;
stk->cnt++;
}
data pop(stack *stk)
{
data d;
elem *p;
d = stk->top->d;
p = stk->top;
stk->top = p->next;
stk->cnt--;
free(p);
return d;
}
data top(stack *stk)
{
return stk->top->d;
}
bool empty(stack *stk)
{
return bool(stk->cnt == EMPTY);
}
bool full(stack *stk)
{
return bool(stk->cnt == FULL);
}