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?

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Answer 1

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

Answer 2

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).

Answer 3

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

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

Answer 4

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

Answer 5

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

Answer 6

It is %lld for signed and %llu for unsigned