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    <p>Unless you are forced to use C, you should <strong>never use</strong> <code>malloc</code>. Always use <code>new</code>.</p> <p>If you need a big chunk of data just do something like:</p> <pre><code>char *pBuffer = new char[1024]; </code></pre> <p>Be careful though this is not correct:</p> <pre><code>//This is incorrect - may delete only one element, may corrupt the heap, or worse... delete pBuffer; </code></pre> <p>Instead you should do this when deleting an array of data:</p> <pre><code>//This deletes all items in the array delete[] pBuffer; </code></pre> <p>The <code>new</code> keyword is the C++ way of doing it, and it will ensure that your type will have its <strong>constructor called</strong>. The <code>new</code> keyword is also more <strong>type-safe</strong> whereas <code>malloc</code> is not type-safe at all. </p> <p>The only way I could think that would be beneficial to use <code>malloc</code> would be if you needed to <strong>change the size of your buffer</strong> of data. The <code>new</code> keyword does not have an analogous way like <code>realloc</code>. The <code>realloc</code> function might be able to extend the size of a chunk of memory for you more efficiently. </p> <p>It is worth mentioning that you cannot mix <code>new</code>/<code>free</code> and <code>malloc</code>/<code>delete</code>.</p> <p>Note: Some answers in this question are invalid. </p> <pre><code>int* p_scalar = new int(5); // Does not create 5 elements, but initializes to 5 int* p_array = new int[5]; // Creates 5 elements </code></pre>
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    1. POIn what cases do I use malloc vs new?
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    1. USBrian R. Bondy
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    1. COWith regard to calling delete foo when you should call delete []foo, some compilers will fix this automagically for you and not leak and other will only delete the first entry and leak. I had a few of these in some code and valgrind will find them for you.
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    2. COI verified this many years ago on VC++ with an array of objects and putting a breakpoint in my destructor. Only the first one got deleted. But ya, good point on some compilers catching this for you.
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    3. COI don't think there's any memory leak if you don't use the [] syntax. But, only the destructor for the first array item will be called.
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