# Introduction When creating a to-do plan, if a task has not been completed yet, it will be added to the to-do list, and if it has been completed, it will be moved to the completed items. In the world of programming, we also need to change the direction of the program based on different requirements. Next, let's learn about the `if` branch statement, which is a flow control statement. **Knowledge Points:** - `if` statement - `if-else` statement - `else-if` statement - formatting rules
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