53 lines
1.7 KiB
C
53 lines
1.7 KiB
C
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/* dict2.c -- initw, insertw, deletew, lookupw */
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#include <string.h>
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#define MAXWORD 50 /* maximum length of a command or word */
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#define DICTSIZ 100 /* maximum number of entries in dictionary. */
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char dict[DICTSIZ][MAXWORD + 1]; /* storage for a dictionary of words */
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int nwords = 0; /* number of words in the dictionary */
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/* ------------------------------------------------------------------
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* initw -- initialize the dictionary to contain no words at all
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* ------------------------------------------------------------------ */
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int initw(void)
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{
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nwords = 0;
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return 1;
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} /* end of initw */
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/* ------------------------------------------------------------------
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* insertw -- insert a word in the dictionary
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* ------------------------------------------------------------------ */
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int insertw(const char *word)
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{
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strcpy(dict[nwords], word);
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nwords++;
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return (nwords);
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} /* end of insertw */
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/* ------------------------------------------------------------------
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* deletew -- delete a word from the dictionary
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* ------------------------------------------------------------------ */
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int deletew(const char *word)
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{
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int i;
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for (i = 0; i < nwords; i++) {
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if (strcmp(word, dict[i]) == 0) {
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nwords--;
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strcpy(dict[i], dict[nwords]);
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return (1);
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}
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} /* end of for */
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return (0);
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} /* end of deletew */
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/* ------------------------------------------------------------------
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* lookupw -- look up a word in the dictionary
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* ------------------------------------------------------------------ */
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int lookupw(const char *word)
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{
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int i;
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for (i = 0; i < nwords; i++) {
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if (strcmp(word, dict[i]) == 0) {
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return (1);
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}
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} /* end of for */
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return (0);
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} /* end of lookupw */
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