[Solved] Identify the error in this MATLAB code snippet:fid = fopen('log.txt', 'r');fprintf(fid, 'Test\n');fclose(fid); | MATLAB

MATLAB - File I/O

Identify the error in this MATLAB code snippet:

fid = fopen('log.txt', 'r');
fprintf(fid, 'Test\n');
fclose(fid);

AFile opened in read mode but used for writing

Bfprintf syntax is incorrect

Cfclose missing argument

DNo error

Step-by-Step Solution

Solution:

Step 1: Check fopen mode
File opened with 'r' (read) mode, so writing is not allowed.
Step 2: Check fprintf usage
fprintf tries to write to file, causing error because file is not writable.
Final Answer:
File opened in read mode but used for writing -> Option A
Quick Check:
File mode must match operation [OK]

Quick Trick: Open files with 'w' to write, 'r' to read [OK]

Common Mistakes:

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