home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
The C Users' Group Library 1994 August
/
wc-cdrom-cusersgrouplibrary-1994-08.iso
/
listings
/
v_09_03
/
9n03121a
< prev
next >
Wrap
Text File
|
1991-01-16
|
1KB
|
65 lines
/*
* xrt.cpp - cross-reference table implementation
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "ln_seq.h"
#include "xrt.h"
struct treenode
{
char *word;
ln_seq lines;
treenode *left, *right;
};
static treenode *addtree
(treenode *t, char *w, unsigned n)
{
int cond;
if (t == NULL)
{
t = new treenode;
t->word
= strcpy((char *)malloc(strlen(w) + 1), w);
t->lines.add(n);
t->left = t->right = NULL;
}
else if ((cond = strcmp(w, t->word)) == 0)
t->lines.add(n);
else if (cond < 0)
t->left = addtree(t->left, w, n);
else
t->right = addtree(t->right, w, n);
return t;
}
static void printtree(treenode *t)
{
if (t != NULL)
{
printtree(t->left);
printf("%12s: ", t->word);
t->lines.print();
printf("\n");
printtree(t->right);
}
}
static treenode *root = NULL;
void xrt_add(char *w, unsigned n)
{
root = addtree(root, w, n);
}
void xrt_print(void)
{
printtree(root);
}