STRUCT_OFFSET
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#include <stdio.h>
#include <stdint.h>
struct bera{
char a;
uint64_t b;
};
struct vera{
char a;
char b;
bera c;
};
#define STRUCT_OFFSET(struc, memeber) (&((struc *)0)->memeber))
int main() {
printf("%llu, %llu", sizeof(vera), STRUCT_OFFSET(vera, c.b);
return 0;
}
Cpp
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