A funny thing with sprintf

Question

I\'m so confused with sprintf that a funny problem with different platfrom. Code :

int main () 
{
    char sql[1024];
    uint32_t app_id = 32;
    uint64_t          


        

Answer 1

As has been pointed out, the proper formatting specifier for uint64_t is PRIu64 (not lu, since there's no guarantee that uint64_t is long).

So, you need to use that:

#define __STDC_FORMAT_MACROS
#include 

char sql[1024];
uint32_t app_id = 32;
uint64_t task_id = 64;
sprintf(sql, "%u, %" PRIu64, app_id, task_id);
printf ("%s\n", sql);