Format specifier for 'long long'

Question

I declare a variable for a 64 bit counter as :

long long call_count;

What is the format specifier that I should use in print statements?

I tried, %l, %ld, %ll. None seems to be correct.

I use Diab C compiler for compiling my application code to run on pSOS operating system.

score 68 · Accepted Answer · answered Jan 20 '09 at 18:08

68

According to C99, it should be "%lld" (see, for example,here). If Diab C isn't C99, then you'd have to look at the compiler docs, which I can't seem to find online with a quick Googling.

answered Jan 20 '09 at 18:08

Bdoserror

1,184
9
22

7

For 'long long unsigned int' you should use "%llu" – Atiq Rahman Dec 08 '13 at 11:08

score 17 · Answer 2 · answered Jan 20 '09 at 17:56

17

It's "%lli" (or equivalently "%lld")

answered Jan 20 '09 at 17:56

Christoph

164,997
36
182
240

score 12 · Answer 3 · edited Aug 06 '13 at 05:32

12

Microsoft and Watcom use %I64d (capital eye), others use %lld (lowercase ell ell).

edited Aug 06 '13 at 05:32

dreamlax

93,976
29
161
209

answered Jan 20 '09 at 17:57

Graeme Perrow

56,086
21
82
121

"use %I64d (capital I)": try again? – Robert Gamble Jan 20 '09 at 18:05
5

Microsoft uses ll (ell ell) for long long; I64 (eye) for __int64. http://msdn.microsoft.com/en-us/library/tcxf1dw6.aspx – Rob Kennedy Jan 20 '09 at 20:22
1

The format specifiers are less ambiguous when they are in `fixed width` (provided a sane fixed-width font is used). – dreamlax Aug 06 '13 at 05:36

score 6 · Answer 4 · edited May 23 '17 at 11:46

6

This one and even little more has been described here: cross-platform printing of 64-bit integers with printf

TL;DR: You can use PRId64 macro (from inttypes.h) to print 64 bit integers in decimal in a semi-portable way. There are also other macros (like PRIx64).

edited May 23 '17 at 11:46

Community

1
1

answered Aug 06 '13 at 06:27

Caladan

1,471
11
13

score 3 · Answer 5 · answered Jan 20 '09 at 17:56

3

Maybe %lld? I think this is the format for gcc, don't know anything about Diab C compiler.

answered Jan 20 '09 at 17:56

raupach

3,092
22
30

3

%lld is the Standard conversion specifier for long long, Windows is the only one I am aware of that doesn't support this (but they don't support a lot of standards). Also, this is specific to the standard c library being used, not the compiler. – Robert Gamble Jan 20 '09 at 18:17

score 2 · Answer 6 · answered Jan 21 '09 at 06:14

2

It is %lld for signed and %llu for unsigned

answered Jan 21 '09 at 06:14

Gerhard

6,850
8
51
81

score 1 · Answer 7 · answered Sep 03 '17 at 19:21

1

long long t1;             //signed
unsigned long long t2;    //unsigned

printf("%lld",t1);
printf("%llu",t2);

answered Sep 03 '17 at 19:21

Aashish Kumar

2,771
3
28
43

Format specifier for 'long long'

7 Answers7

Related