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to numbers. As an example, "0020" does not represent 20₁₀ (2×10¹ + 0×10⁰), but rather 20₈ = 16₁₀ (2×8¹ + 0×8⁰ = 1×10¹ + 6×10⁰). Decimal numbers written with leading zeros will be interpreted as octal by languages that follow this convention and will generate errors if they contain "8" or "9", since these digits do not exist in octal. This behavior can be a nuisance when working with sequences of strings with

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