問題文
A structure marks its identifier as needed, and a caller leaves it out. A second field of that structure has to be able to carry an empty value inside a document-style body. What happens, and what has to be written?
選択肢
- Leaving the needed identifier out ends the run with the validation complaint naming it, and carrying the empty value in the document form takes the whitespace marker on that element.
- Leaving the needed identifier out ends the run with the timeout complaint naming it, and carrying the empty value in the document form takes the whitespace marker on that element.
- Leaving the needed identifier out ends the run with the validation complaint naming it, and carrying the empty value in the document form takes the explicit marker on that element.
- Leaving the needed identifier out ends the run with the timeout complaint naming it, and carrying the empty value in the document form takes the explicit marker on that element.