Format specifier for printing a bitfield in a structure in hexadecimal notation in c

Question

I have the following structure

struct data {
    uint64_t addr:50;
};

If I want to print the value addr

in hexadecimal decimal format, which should I use the format specifier?

+3

c formatting printf bit-fields

Chinna 09 dec. '14 at 7:41

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1 answer

John Zwinck · Answer 1 · 2014-12-09T07:51:10+0000

You have to do this in two steps: first create a complete variable uint64_t

with a copy addr

, then print it with "%" PRIx64

.