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<title>sizeof</title>
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<p><br clear="all">
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<hr>
<h1>sizeof</h1>
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<p>This function returns the declared number of elements of a <b><font face="Courier New">record, record of, set, set of</font></b> type or the actual number of elements of a constant, variable, <b><font
face="Courier New">template</font></b> of these types or array. In the case of <b><font face="Courier New">record of</font></b> and <b><font face="Courier New">set of</font></b> values or templates or
arrays, the actual value to be returned is the sequential number of the last defined element (index of that element plus 1).
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<p>Related keyword:</p>
<ul>
<li><b><font face="Courier New" size="4" color="#003258"><a href="integer.html">integer</a></font></b></li>
<li><b><a href="record.html"><font face="Courier New" size="4" color="#003258">record</font></a></b></li>
<li><b><a href="set.html"><font face="Courier New" size="4" color="#003258">set</font></a></b></li>
<li><b><a href="template.html"><font face="Courier New" size="4" color="#003258">template</font></a></b></li>
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<h3 align="center"><font face="Courier New" color="#003258" size="5"><b>sizeof</b></font><font face="Courier New" color="#003258" size="5"><b>(</b></font><i>structured_type value</i><font
face="Courier New" color="#003258" size="5"><b>) return integer</b></font></h3>
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<li>
<p>Only elements of the TTCN-3 object, which is the parameter of the function are calculated; i.e. no elements of nested types/values are taken into account at determining the return value.</p>
</li>
</ul>
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<p>Example 1:</p>
<p><font face="Courier New"> type record MyPDU<br>
{ boolean field1 optional,<br>
integer field2<br>
};<br>
type record of integer MyPDU1;<br>
<br>
const MyPDU MyConst :=<br>
{ field1 := true,<br>
field2 := 29<br>
};<br>
<br>
template MyPDU MyTemplate :=<br>
{ field1 := omit,<br>
field2 := 5<br>
};<br>
<br>
var integer numElements;<br>
<br>
<p>...
<p> numElements := sizeof(MyConst); // returns 2<br>
numElements := sizeof(MyTemplate); // returns 1<br>
</font></p>
<p>Example 2:</p>
<p><font face="Courier New"> type record of integer MyRecord;<br>
var MyRecord MyRecordVar;<br>
MyRecordVar := { 0, 1, -, 2 };<br>
<br>
<p>...
<p> numElements := sizeof(MyRecordVar);<br>
// returns 4 without respect to the fact, that the element MyRecordVar[2] is undefined
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