Which of the following is not a user-defined data type ?

1.	Which of the following is not a user-defined data type ?
A.	<pre class="prettyprint lang-c">struct employ<br>{<br> char name[10];<br> float salary;<br> int workingdays;<br>};<br></pre>
B.	<pre class="prettyprint lang-c">long int k = 65.5;</pre>
C.	<pre class="prettyprint lang-c">enum day {Sun, Mon, Tue, Wed};</pre>
D.	<pre class="prettyprint lang-c">union xyz<br>{<br> int k;<br> char ch[5];<br>};<br></pre>
Answer» C. <pre class="prettyprint lang-c">enum day {Sun, Mon, Tue, Wed};</pre>

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Which of the following is not a user-defined data type ?

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