new files

Task/Ordered-words/C/ordered-words-2.c

@@ -0,0 +1,87 @@
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <assert.h>
+
+
+#define MAXLEN 100
+typedef char TWord[MAXLEN];
+
+
+typedef struct WordsArray {
+    TWord *words;
+    size_t len;
+} WordsArray;
+
+
+int is_ordered_word(const TWord word) {
+    assert(word != NULL);
+    int i;
+
+    for (i = 0; word[i] != '\0'; i++)
+        if (word[i] > word[i + 1] && word[i + 1] != '\0')
+            return 0;
+
+    return 1;
+}
+
+
+void array_append(WordsArray *words_array, const TWord new_word) {
+    assert(words_array != NULL);
+    assert(new_word != NULL);
+    assert((words_array->len == 0) == (words_array->words == NULL));
+
+    words_array->len++;
+    words_array->words = realloc(words_array->words,
+                                 words_array->len * sizeof(words_array->words[0]));
+    if (words_array->words == NULL)
+        exit(EXIT_FAILURE);
+    strcpy(words_array->words[words_array->len-1], new_word);
+}
+
+
+void array_free(WordsArray *words_array) {
+    assert(words_array != NULL);
+    free(words_array->words);
+    words_array->words = NULL;
+    words_array->len = 0;
+}
+
+
+void list_print(WordsArray *words_array) {
+    assert(words_array != NULL);
+    size_t i;
+    for (i = 0; i < words_array->len; i++)
+        printf("\n%s", words_array->words[i]);
+}
+
+
+int main() {
+    FILE *fp = fopen("unixdict.txt", "r");
+    if (fp == NULL)
+        return EXIT_FAILURE;
+
+    WordsArray words;
+    words.len = 0;
+    words.words = NULL;
+
+    TWord line;
+    line[0] = '\0';
+    unsigned int max_len = 0;
+
+    while (fscanf(fp, "%99s\n", line) != EOF) { // 99 = MAXLEN - 1
+        if (strlen(line) > max_len && is_ordered_word(line)) {
+            max_len = strlen(line);
+            array_free(&words);
+            array_append(&words, line);
+        } else if (strlen(line) == max_len && is_ordered_word(line)) {
+            array_append(&words, line);
+        }
+    }
+
+    fclose(fp);
+    list_print(&words);
+    array_free(&words);
+
+    return EXIT_SUCCESS;
+}