// Quiz: anyone know what's going on ?

#include <stdio.h>

int main( int argc, char* argv[] )
{

   long x = 4611686018427387904L;


   // printf("%ld  %ld\n\n", sizeof(long), sizeof(double));
   printf("%lf\n\n\n", x);
   // printf("%ld\n\n\n", x);

   // x   =   0 10000000000 00000000000000000000000000000000000000000
   //         <--------------------- 64 bits ----------------------->
   //     = 2^62 = 4611686018427387904
}