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26 lines
608 B
C
26 lines
608 B
C
#define MPRT 255
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#define SIZE 80
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typedef struct tree
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{
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unsigned char key;
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struct tree *parent;
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struct tree *left;
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struct tree *right;
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} Tree;
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Tree *tnew(void);
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Tree *leaf(char c);
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Tree *maketree(char expr[], int first, int last);
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unsigned char priority(char c);
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int lastop(char expr[], int first, int last);
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int calculate(Tree *root);
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void showtree(Tree *root, int level);
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Tree *create(unsigned char key);
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Tree *add(Tree *root, unsigned char key);
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Tree *search(Tree *root, unsigned char key);
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Tree *min(Tree *root);
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Tree *max(Tree *root);
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Tree *nextdel(Tree *root);
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void delete(Tree *del);
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