[FIX] Avoid unsecure use of printf

[juangpc]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 4 lines in your changes missing coverage. Please review.
✅ Project coverage is 30.20%. Comparing base (03e7ecd) to head (b3f330a).
⚠️ Report is 789 commits behind head on main.

Files with missing lines	Patch %	Lines
libraries/inverse/dipoleFit/ecd_set.cpp	0.00%	4 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #868   +/-   ##
=======================================
  Coverage   30.19%   30.20%           
=======================================
  Files         452      452           
  Lines       39208    39208           
=======================================
+ Hits        11840    11841    +1     
+ Misses      27368    27367    -1     

Files with missing lines	Coverage Δ
libraries/inverse/dipoleFit/ecd_set.cpp	50.00% <0.00%> (ø)

... and 1 file with indirect coverage changes

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