How to specify 64 bit integers in c

Question

I\'m trying to use 64 bit integers in C, but am getting mixed signals as to whether it should be possible.

When I execute the printf:

printf(\"Size o         


        

Answer 1

Use int64_t, that portable C99 code.

int64_t var = 0x0000444400004444LL;

For printing:

#define __STDC_FORMAT_MACROS
#include 

printf("blabla %" PRIi64 " blabla\n", var);