MATLAB - String Handling
Why does the following MATLAB code produce the string 'Value: 3.14' instead of 'Value: 3.140' when using
sprintf?str = sprintf('Value: %.3g', 3.14);Why does the following MATLAB code produce the string 'Value: 3.14' instead of 'Value: 3.140' when using sprintf?
hard📝 Conceptual Q10 of 15
Step-by-Step Solution
Solution:
Step 1: Understand %g specifier behavior
%g chooses shortest representation between %f and %e.Step 2: Analyze output for 3.14 with %.3g
It shows 3 significant digits, so '3.14' instead of fixed 3 decimals.Final Answer:
Because %g uses the shortest representation, not fixed decimals -> Option CQuick Check:
%g = shortest representation, not fixed decimals [OK]
Quick Trick: Use %f for fixed decimals, %g for shortest form [OK]
Common Mistakes:
- Expecting %g to fix decimal places
- Confusing %g with %f
- Thinking %.3g is invalid
Master "String Handling" in MATLAB
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