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  1. #include "stdbool.h"
  2. #include "stdint.h"
  3. #include "stdio.h"
  4.  
  5. typedef union {
  6. 	struct {
  7. 		uint64_t a;
  8. 		bool     b;
  9. 		char*    c;
  10. 	} unsigned_data;
  11. 	struct {
  12. 		int64_t  a;
  13. 		bool     b;
  14. 		char*    c;
  15. 	} signed_data;
  16. } data1_t;
  17.  
  18. typedef union {
  19. 	struct {
  20. 		uint64_t a;
  21. 		bool     b;
  22. 		char*    c;
  23. 	} data;
  24. } data2_t;
  25.  
  26. int main() {
  27. 	data1_t d1 = {.signed_data = {-10, true, 0}};
  28. 	int64_t v1 = d1.signed_data.a;
  29.  
  30.  
  31. 	data2_t d2 = {.data = {-10, true, 0}};
  32. 	int64_t v2 = d2.data.a;
  33.  
  34. 	printf("v1 = %lld, v2 = %lld", v1, v2);
  35. }
Success #stdin #stdout 0s 5496KB
comments (?)
stdin 
Standard input is empty
stdout 
v1 = -10, v2 = -10
https://ideone.com/S3PttS
language:
C (clang 8.0)
created:
4 years ago
visibility:
public

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