C Program To Implement Dictionary Using Hashing Algorithms -

// Insert or update a key-value pair void insert(HashTable *table, const char *key, int value) !key) return;

KeyValuePair *current = table->buckets[index]; while (current) if (strcmp(current->key, key) == 0) if (found) *found = 1; return current->value; current = current->next; c program to implement dictionary using hashing algorithms

// Allocate memory for the bucket array table->buckets = (KeyValuePair**)calloc(size, sizeof(KeyValuePair*)); if (!table->buckets) free(table); return NULL; // Insert or update a key-value pair void

// Re-insert all old entries for (int i = 0; i < old_size; i++) KeyValuePair *current = old_buckets[i]; while (current) insert(table, current->key, current->value); KeyValuePair *temp = current; current = current->next; free(temp->key); free(temp); const char *key

We'll also implement the hash as an alternative for comparison.

While C lacks built-in dictionaries, mastering this implementation gives you complete control over performance and memory—something higher-level languages abstract away. Whether you're building a compiler symbol table, a database index, or a caching system, this hash table dictionary will serve you well.