You want to write a program that prints the average of the high temperatures in January. Which of the four file-reading approaches should you use?

To determine the appropriate file-reading approach for writing a program that prints the average of the high temperatures in January, we need to consider the available options.

There are four common file-reading approaches:

1. Reading the entire file into memory: This approach involves reading the entire file and storing its contents in memory. It is suitable for small files but may not be efficient for large files.

2. Reading the file line by line: This approach involves reading the file one line at a time. It is suitable for processing large files as it does not require loading the entire file into memory.

3. Reading the file in chunks: This approach involves reading the file in smaller chunks or blocks. It is useful for handling very large files where reading the entire file at once may not be feasible.

4. Memory-mapped file: This approach involves mapping the file directly into memory, allowing direct access to its contents. It is suitable for large files and provides efficient random access to the file data.

To determine the most appropriate approach for your program, consider the size of the file and the available system resources. If the file is small and can fit into memory, reading the entire file into memory may be the simplest approach. If the file is large, reading it line by line or in chunks would be more efficient. If random access to the file data is required, a memory-mapped file approach may be the best choice.

Consider the specific requirements of your program and the constraints of your system to determine the most suitable file-reading approach for calculating the average of the high temperatures in January.