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copied!<p><code> unsigned int buffsize = 100000000; unsigned long long counter = 0;</p> <pre><code>try { vector<shared_ptr<char*>> pool; // container to hold the allocated memory, shared pointer does clean up for us. while(true) { shared_ptr<char*> sp = make_shared<char*>(new char[buffsize]); // allocate memory, //this can potentially leak memory if compiled with msvc version < 10 sp1. pool.push_back(sp); // insert into vector counter += (sizeof(char) * buffsize); // increment counter , counter will be size in bytes } } catch(std::bad_alloc a) // capture exception by value, as to not leak the exception { cout << "Approximate size of heap: \r\n" << counter << " Bytes" << endl; // output counter's size. cout << counter/1024 << " KiloBytes" << endl; cout << (counter/1024)/1024 << " MegaBytes" << endl; cout << (((counter)/1024)/1024)/1024 << " GigaBytes" << endl; cin.get(); } </code></pre> <p></code></p> <p>Compile with Visual Studio 10 or better, the latest GCC should be a safe option as well. For the question dealing with signed / unsigned <a href="http://www.cplusplus.com/forum/general/33691/" rel="nofollow" title="go here"> go here</a>, And for an explanation on built in data types <a href="http://www.cplusplus.com/doc/tutorial/variables/" rel="nofollow">go here</a>. the long identifier is used to increase the storage of the data type, such as the difference between a double and a long double. A long long on my system/platform for instance is 8 bytes, where as a regular long is 4 bytes. </p>

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