What is the purpose of the PUT statement in SAS?

The PUT statement in SAS is primarily used to write data values and display them in a specified format. This allows for formatted output to be generated, which can be particularly useful when reporting data or presenting results in a clear and structured manner. By utilizing the PUT statement, users can control how data appears when written to output files, log files, or when printed, which enhances readability and the overall presentation of the data.

For instance, if you want to present a date value in a specific format, using the PUT statement with a date format ensures that it appears as desired when outputted. This flexibility makes the PUT statement essential for formatting output, thereby aligning with the purpose of writing data in a specific format.

Other options detail different functionalities that are not aligned with the core purpose of the PUT statement, such as reading from data files or declaring variables. These functionalities are addressed by other statements in SAS but do not pertain to the primary use of the PUT statement.