Question

Suppose I have one long long int and want to take its bits and construct four unsigned short ints out of it.

Particular order doesn’t matter much here.

I generally know that I need to shift bits and truncate to the size of unsigned short int. But I think I may make some weird mistake somewhere, so I ask.

Answer 1

#include <stdint.h> #include <stdio.h>  union ui64 {     uint64_t one;     uint16_t four[4]; };  int main() {     union ui64 number = {0x123456789abcdef0};     printf('%x %x %x %x\n', number.four[0], number.four[1],                             number.four[2], number.four[3]);     return 0; }