Conversion specifier %ju
c, printf, scanf
Solution
`%ju` is just the `%u` (unsigned) format with a `j` length modifier, the latter being defined in the C99 standard as:
`j` — Specifies that a following `d`, `i`, `o`, `u`, `x`, `X`, or `n` conversion specifier applies to an argument with type pointer to `intmax_t` or `uintmax_t`.
Problem
In the following page, I found the code like CERT INT15-C Use intmax_t or uintmax_t for formatted IO on programmer-defined integer types ``` uintmax_t temp; if(scanf("%ju", &temp) != 1) { ... ``` I am not familiar with the "%ju" specifier. And I am not successful in finding the explanation of the "%ju" on the Internet. Is this defined by some specific compiler environment, or generally used one?