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<title> The invalid_argument Class</title>
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<pre>
<font size=5>Class Name</font> invalid_argument
<font size=5>Header File</font> <stdexcept>
<font size=5>Classification</font> Input/Output (Format Class)
</pre>
<a href="inverror.htm#diagram">Class Relationship Diagram</a><br>
<br>
<a href="inverror.htm#desc">Class Description</a><br>
<h1>Member Classes</h1>
<i>None</i>
<h1>Methods</h1>
<pre>
<a href="inverror.htm#invalid">invalid_argument(const string &What_Arg)</a><br>
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<a href="inverror.htm#example"><h2>Example</h2></a><br>
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<a name="desc"><h3>Class Description</h3></a>
<p>
The invalid_argument class is derived from the logic_error class. The invalid_argument
class represents exceptions that are occur because some piece of the software component
that causes the exception is violating some argument specification. The invalid argument
will either be an in error parameter, or an in error return type. The invalid_argument
can be used to describe improper content. However, it is usually used to describe an improper
object type. This class represents a node class and can therefore be used as a base class
for user defined classes. Objects of this type are thrown by methods that are part of the
standard C++ class library.
</p>
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<pre>
<a name="invalid">Method invalid_argument()</a>
Access Public
Classification Constructor
Syntax invalid_argument(const string &What_Arg)
Parameters The What_Arg parameter should contain a description of the kind of exception
that has occurred.
Return None
</pre>
<h3>Description</h3>
<p>
The invalid_argument() method constructs an object of type invalid_argument. The What_Arg parameter
can be used to set a description of the kind of error that this exception represents.
A set possible solutions is sometimes supplied with the exception description in addition
to the type of error.
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<a name="diagram"><h2>The Class Relationship Diagram of invalid_argument</h2></a>
<img src="invalid.gif">
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<a name="example"></a>
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<pre>
1
2 #include <stdexcept>
3
4
5 void main(void)
6 {
7
8
9 try{
10
11 exception X;
12 throw(X);
13 }
14 catch(const exception &X)
15 {
16 cout << X.what() << endl;
17
18 }
19
20 try
21 {
22 invalid_argument Invalid("Bad Argument");
23 throw(Invalid);
24 }
25 catch(const exception &X)
26 {
27 cout << X.what() << endl;
28 }
29
30
31
32 }
33
</pre>
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