堆与栈

附上一段代码，理解堆与栈的使用：

int foo()
{
    char *pBuffer; //<--nothing allocated yet (excluding the pointer itself, which is allocated here on the stack).
    bool b = true; // Allocated on the stack.
    if(b)
    {
        //Create 500 bytes on the stack
        char buffer[500];
        //Create 500 bytes on the heap
        pBuffer = new char[500];
    }//<-- buffer is deallocated here, pBuffer is not
}//<--- oops there's a memory leak, I should have called delete[] pBuffer;