I need to do a 2d dynamic array version of a hash table implementation in c. - How can I allocate the 2d dynamic array as a global variable ? (please note that the rows represent he hash space and the columns represent the key-value pairs which are character strings) thanks.

I wasn't given a range for the hash value . How can it have a range if this is a dynamic array ? excuse my questions i'm a complete beginner in c.