Sunday common C++ interview problem: Number validator.
Given a potential number as a string, determine whether the string contains (only) a valid decimal number.
Solve it yourself: https://compiler-explorer.com/z/KoKsnvveY
Solution: https://compiler-explorer.com/z/s6vbKnj9T
@simontoth "three"
@davidr Thank you for applying, after much deliberation, we have decided that you are not a good cultural fit