4-hash_table_get.c

Author: Breign3

0x1A-hash_tables/4-hash_table_get.c

@@ -0,0 +1,29 @@
+#include "hash_tables.h"
+
+/**
+ * hash_table_get - retrieves a value associated with a key.
+ * @ht: pointer to the hash table.
+ * @key: key to get the value of.
+ * Return: If the key cannot be matched - NULL.
+ *         Otherwise - the value associated with key in ht.
+ */
+
+char *hash_table_get(const hash_table_t *ht, const char *key)
+{
+	unsigned long int index;
+	hash_node_t *current_node;
+
+	if (ht == NULL || key == NULL)
+		return (NULL);
+	index = key_index((const unsigned char *) key, ht->size);
+	if ((ht->array)[index] == NULL)
+		return (NULL);
+	current_node = (ht->array)[index];
+	while (current_node)
+	{
+		if (strcmp(current_node->key, key) == 0)
+			return (current_node->value);
+		current_node = current_node->next;
+	}
+	return (NULL);
+}

0x1A-hash_tables/4-main.c

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+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include "hash_tables.h"
+
+/**
+ * main - check the code
+ *
+ * Return: Always EXIT_SUCCESS.
+ */
+int main(void)
+{
+	hash_table_t *ht;
+	char *value;
+
+	ht = hash_table_create(1024);
+	hash_table_set(ht, "c", "fun");
+	hash_table_set(ht, "python", "awesome");
+	hash_table_set(ht, "Bob", "and Kris love asm");
+	hash_table_set(ht, "N", "queens");
+	hash_table_set(ht, "Asterix", "Obelix");
+	hash_table_set(ht, "Betty", "Cool");
+	hash_table_set(ht, "98", "Battery Street");
+	hash_table_set(ht, "c", "isfun");
+
+	value = hash_table_get(ht, "python");
+	printf("%s:%s\n", "python", value);
+	value = hash_table_get(ht, "Bob");
+	printf("%s:%s\n", "Bob", value);
+	value = hash_table_get(ht, "N");
+	printf("%s:%s\n", "N", value);
+	value = hash_table_get(ht, "Asterix");
+	printf("%s:%s\n", "Asterix", value);
+	value = hash_table_get(ht, "Betty");
+	printf("%s:%s\n", "Betty", value);
+	value = hash_table_get(ht, "98");
+	printf("%s:%s\n", "98", value);
+	value = hash_table_get(ht, "c");
+	printf("%s:%s\n", "c", value);
+	value = hash_table_get(ht, "javascript");
+	printf("%s:%s\n", "javascript", value);
+	return (EXIT_SUCCESS);
+}