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How can you safely combine a folder path stored in variable folderPath and a filename fileName to create a full file path in MATLAB?

hard📝 Application Q9 of 15
MATLAB - File I/O
How can you safely combine a folder path stored in variable folderPath and a filename fileName to create a full file path in MATLAB?
AUse sprintf('%s%s', folderPath, fileName)
BUse fullfile(folderPath, fileName)
CUse strcat(folderPath, fileName)
DConcatenate with [folderPath '/' fileName]
Step-by-Step Solution
Solution:
  1. Step 1: Understand platform independence

    Using fullfile handles different OS separators automatically.
  2. Step 2: Avoid manual concatenation

    Concatenating strings manually risks wrong separators or missing slashes.
  3. Final Answer:

    Use fullfile(folderPath, fileName) -> Option B
  4. Quick Check:

    fullfile safely joins paths across OS [OK]
Quick Trick: Always use fullfile to join paths safely [OK]
Common Mistakes:
  • Manually concatenating paths with '/'
  • Using strcat which ignores separators
  • Using sprintf without separators

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