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  1. #include <stdio.h>
  2. #include <stddef.h>
  3. #include <stdint.h>
  4.  
  5.  
  6. typedef struct {
  7.   uint8_t dir;            // 'F' = CW, 'R' = CCW
  8.   uint32_t rev;           // number of revolutions
  9.   uint8_t filler[3];      // filler
  10. } stepper_data_t;
  11.  
  12. int main(void) {
  13.  
  14. 	printf("offset of dir: %d\n", offsetof(stepper_data_t, dir));
  15. 	printf("offset of rev: %d\n", offsetof(stepper_data_t, rev));
  16. 	printf("offset of filler: %d\n", offsetof(stepper_data_t, filler));
  17.  
  18. 	return 0;
  19. }
  20.  
Success #stdin #stdout 0s 5516KB
comments (?)
stdin 
Standard input is empty
stdout 
offset of dir: 0
offset of rev: 4
offset of filler: 8
https://ideone.com/7ksmU4
language:
C (gcc 8.3)
created:
2 years ago
visibility:
secret

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