Reading data from xml file having attributes to some segments to data frame in R

My XML file looks something like this

<root>
    <row a="1" b="2" c="3">
        <name>John</name>
        <zipcode>23000</zipcode>
    </row>
    <row a="5" b="6" c="7">
        <name>Bob</name>
        <zipcode>10000</zipcode>
    </row>
    <row a="9" b="8" c="10">
        <name>Harry</name>
        <zipcode>45000</zipcode>
    </row>
</root>

I need to save this data to an dataframe in R. This xml data is stored in an xml file. I searched from many places. But could not find a satisfied answer.

Can anybody throw some light on this?