Initial commit

main.c

@@ -0,0 +1,58 @@
+#include <stdio.h>
+
+#define HM_IMPLEMENTATION
+#define HM_INITIAL_CAPACITY 1
+#include "hm.h"
+
+void print_hm(const HashMap *hm)
+{
+    HashMapIterator it = hm_iterate(hm);
+    while (hm_next(&it) != NULL) {
+        printf("%-15s: ", (const char*)hm_key(&it));
+        printf("%d\n", *(int*)hm_value(&it));
+    }
+}
+
+const char *words[49] = {
+    "apple", "banana", "cherry", "date", "elderberry", "fig", "grape",
+    "honeydew", "apple", "banana", "kiwi", "lemon", "mango", "nectarine",
+    "orange", "papaya", "quince", "raspberry", "strawberry", "tangerine",
+    "ugli", "voavanga", "watermelon", "xigua", "yellowfruit", "zucchini",
+    "apple", "banana", "cherry", "mango", "kiwi", "lemon", "lemon", "orange",
+    "papaya", "papaya", "grape", "grape", "grape", "strawberry", "strawberry",
+    "date", "date", "date", "fig", "fig", "elderberry", "nectarine", "plum"
+};
+const size_t N = sizeof(words)/sizeof(words[0]);
+const int ONE = 1;
+
+int main(void)
+{
+    HashMap freq = hm_create(0, sizeof(int));
+
+    for (size_t i = 0; i < N; ++i) {
+        const char *word = words[i];
+
+        int *f = hm_get(&freq, word);
+        if (f == NULL) {
+            hm_put(&freq, word, &ONE);
+        } else {
+            *f += 1;
+        }
+    }
+
+    print(&freq);
+    printf("count = %zu\n", freq.count);
+
+    HashMapIterator it = hm_iterate(&freq);
+    hm_next(&it);
+    while (hm_value(&it) != NULL) {
+        const void *key = hm_key(&it);
+        hm_next(&it);
+        hm_remove(&freq, key);
+    }
+
+    printf("count = %zu\n", freq.count);
+    hm_free(&freq);
+
+    return 0;
+}