Zero is always zero, so it doesn't matter. But in a recent discussion with my friend he said that octal literals are almost unused today. Then it dawned upon me that actually almost all integer literals in my code are octal, namely
0 is an Octal literal in C++.
As per the C++ Standard:
2.14.2 Integer literals [lex.icon]
integer-literal: decimal-literal integer-suffixopt octal-literal integer-suffixopt hexadecimal-literal integer-suffixopt decimal-literal: nonzero-digit decimal-literal digit octal-literal: 0 <--------------------<Here> octal-literal octal-digit