Difference between %i and %d in printf() for C and C++

Question

what is the difference between %d and %i when used in printf function ?

Answer 1

AFAIK, none. Both are int to/from decimal.

Answer 2

There isn't any - the two are synonyms.

Answer 3

These are identical for printf but different for scanf. For printf, both %d and %i designate a signed decimal integer. For scanf, %d and %i also means a signed integer but %i inteprets the input as a hexadecimal number if preceded by 0x and octal if preceded by 0 and otherwise interprets the input as decimal.

Answer 4

They are the same when used for output, e.g. with printf, but different when used as input specifier e.g. with scanf, where %d scans an integer as a signed decimal number, but %i allows defaults to decimal but also allows hexadecimal (if preceded by "0x") and octal if preceded by "0".

So "033" would be 27 with %i but 33 with %d.