/in/foo.cc: In function 'int main()':
/in/foo.cc:7:18: warning: format '%u' expects argument of type 'unsigned int', but argument 2 has type 'long long int' [-Wformat=]
    7 |         printf("%u", (a >> 16) + (a << 16));
      |                 ~^   ~~~~~~~~~~~~~~~~~~~~~
      |                  |             |
      |                  unsigned int  long long int
      |                 %llu