Undefined values: Difference between revisions
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{{task}}For languages which have an explicit notion of an undefined value, identify and exercise those language's mechanisms for identifying and manipulating a variable's value's status as being undefined |
{{task}}For languages which have an explicit notion of an undefined value, identify and exercise those language's mechanisms for identifying and manipulating a variable's value's status as being undefined |
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=={{header| |
=={{header|C sharp|C#}}== |
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When a basic type is suffixed by a question mark the type is marked nullable and gains an additional NULL value in addition to its usual allowed values. |
When a basic type is suffixed by a question mark the type is marked nullable and gains an additional NULL value in addition to its usual allowed values. |
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<lang csharp> |
<lang csharp> |
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