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POMemory allocation problem in HashTable
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  1. POMemory allocation problem in HashTable
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    copied!<p><strong><em>Please don't close this saying a <a href="https://stackoverflow.com/questions/827986/why-this-code-doesnt-allocate-memory-in-c-please-help">duplicate question</a>. I made an important change so not to confuse people, I resubmitted this much clearer codes.</em></strong></p> <p>Please help me to solve this memory allocation problem. I'm working on a HashTable and this is what I've (partial codes only)</p> <p><strong>main.c</strong></p> <pre><code>HashTablePtr hash; hash = createHashTable(10); insert(hash, "hello"); insert(hash, "world"); </code></pre> <p><strong>HashTable.c</strong></p> <pre><code> HashTablePtr createHashTable(unsigned int capacity){ HashTablePtr hash; hash = (HashTablePtr) malloc(sizeof(HashTablePtr)); hash-&gt;size = 0; hash-&gt;capacity = capacity; hash-&gt;list = (ListPtr *)calloc(capacity, sizeof(List)); /*NO MEMORY ALLOCATION HERE*/ return hash; </code></pre> <p><strong>List.h</strong></p> <pre><code>typedef struct list List; typedef struct list * ListPtr; struct list { int size; NodePtr head; NodePtr tail; }; ... ... </code></pre> <p><strong>HashTable.h</strong></p> <pre><code> typedef struct hashtable * HashTablePtr; typedef struct hashtable HashTable; struct hashtable { unsigned int capacity; unsigned int size; ListPtr *list; unsigned int (*makeHash)(unsigned int, void *); }; ... ... </code></pre> <p>When I run my debugger (Netbeans C/C++ debugger, I see no memory being allocated to hash->list. In above example, my attempt is to make it an array of 10 lists.</p> <p>Please help me to solve this.</p> <p>I'm not that expert in C, if that helps.</p>
 

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