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

Use %llu format string for task_id in sprintf()as follows:

sprintf(sql, "%llu, %u", task_id, app_id);
//             ^
//            for: long long unsigned int

Edit: As @Simonc suggested its better to use: PRIu32 and PRIu64 macros defined in (as you have Linux tag) do like:

sprintf(sql, "%"PRIu64", %"PRIu32"", task_id, app_id);
//               ^           ^
//       for:   uint64_t    uint32_t