What are the rules for using question marks?

The rules for using question marks are as follows:

1. Question marks are used at the end of direct questions. For example: "What is your name?"

2. When a question is embedded within a sentence, a question mark is used at the end of the embedded question. For example: "I wonder if she will come?"

3. In sentences that express doubt or uncertainty, a question mark can be used even if it is not a direct question. For example: "He said that?!"

4. When a sentence contains both a question and an exclamation, a question mark is used. For example: "Are you serious?"

5. In indirect questions, where the question is reported rather than directly asked, a period is used instead of a question mark. For example: "She asked me what time it was."

6. When a question is part of a title or heading, a question mark is used. For example: "What is the meaning of life?"

7. In informal writing, such as text messages or social media posts, question marks can be used to convey a sarcastic or rhetorical question. For example: "Nice weather we're having, huh?"

It is important to note that question marks should not be overused and should only be used when necessary to indicate a direct question or uncertainty.