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面试准备

Microsoft .NET 面试题与答案

Test your skills through the online practice test: Microsoft .NET Quiz Online Practice Test

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问题 6. What is explicit vs. implicit conversion?

When converting from a smaller numeric type into a larger one the cast is implicit. An
example of when an explicit cast is needed is when a value may be truncated.

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问题 7. Can assignment operators be overloaded directly?

No

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问题 8. What do operators is and as do?

as acts is like a cast but returns a null on conversion failure. Is comares an object to a
type and returns a boolean.

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问题 9. What is the difference between the new operator and modifier?

The new operator creates an instance of a class whereas the new modifier is used to
declare a method with the same name as a method in one of the parent classes.

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问题 10. Explain sizeof and typeof.

typeof obtains the System.Type object for a type and sizeof obtains the size of a type.

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