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    <p>You've already gotten a reasonably direct answer to your question. Based on what you seem to be trying to accomplish, however, it seems to me that a less direct answer may really be a better one.</p> <p>At least as I read your description, you have a number of unique students, and a number of courses for each. When a student has completed a course, you want to look for the student. If they're not in the collection, add them. Then add the data for the course they completed.</p> <p>That being the case, a vector strikes me as a less than ideal solution. You could implement code a couple of different ways, but I'd probably do it like this:</p> <pre><code>struct course { std::string Quarter_, Course_, Credits_, Grade_; using std::string; course(string const &amp;q, string const &amp;c, string const &amp;cr, string const &amp;g) : Quarter_(q), Course_(c), Credits_(cr), Grade_(g) {} }; std::map&lt;std::string, std::vector&lt;course&gt; &gt; m_students; </code></pre> <p>Using this, your entire sequence to look up a student, insert a new student if there isn't one by that name, then adding the course work to the (new or existing) student's record would work out as:</p> <pre><code>m_students[strName].push_back(course(strQuarter, strCourse, strCredits, strGrade)); </code></pre> <p>Getting back to your original question, the standard containers are intended to work with <em>values</em>. You pass a value to them, and they store a copy of that value. One consequence of that is that anything like <code>push_back(new XXX)</code> is essentially <em>always</em> a mistake (pretty much a guaranteed memory leak). If you have an object, just pass it. If you don't, just create a temporary and pass that. In Java (for one example) seeing <code>new XXX</code> all over the place is routine and nearly unavoidable. While you <em>can</em> write C++ that way as well, it's not something you should expect as a rule.</p>
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    1. POIn C++, how do I push an object to a vector while maintaining a pointer to the object?
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    1. USJerry Coffin
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    1. CO+1 Yay for looking at the big picture! :-D
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      1. USChris Jester-Young
    2. CO+1 You are right that this is more like what I would want...if my goal was to create a real application. Unfortunately, this was for a school assignment and the professor was very specific about what data structures we should use and there wasn't room for this kind of creativity.
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      1. USPaul Williams
 

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