Add sum.cpp exercise#473

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FlaFOG25 wants to merge 4 commits intoUNICT-Quality-Development:mainfrom

FlaFOG25:sum-exercise-branch

Commits on Feb 19, 2026

Add sum.cpp exercise
Flavio Micciché
committed

Commits on Feb 21, 2026

Merge branch 'UNICT-Quality-Development:main' into sum-exercise-branch
FlaFOG25
authored

Commits on Feb 22, 2026

fix: replace tabs with spaces in sum.cpp
Flavio Micciché
committed

Commits on Feb 23, 2026

fix: correct indentation in sum.cpp
Flavio Micciché
committed