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  1. #include<stdlib.h>
  2. #include<stdio.h>
  3. #define BUF_SIZE 256
  4.  
  5. int a;  // .bss
  6. static int b;   // .bss
  7. int c = 3;      // .data
  8.  
  9. void foo(char **output)
  10. {
  11. 	static int d = 0, e = 5;        // d — .bss, e — .data
  12. 	/* auto */ int f = 0;           // stack
  13.  
  14. 	++a, ++d, ++f;
  15.  
  16. 	const char *fmt = "%d %d %d %d %d %d";  // .rodata
  17. 	*output = malloc(BUF_SIZE);             // heap
  18.  
  19. 	snprintf(*output, BUF_SIZE, fmt, a, b, c, d, e, f);
  20. }
  21.  
  22. int main(void)
  23. {
  24. 	static char *output;   // The pointer is in .bss (defaults to NULL)!
  25. 	for (register int i = 0; i < 5; ++i) {
  26. 		foo(&output);
  27. 		puts(output);
  28. 		free(output);
  29. 	}
  30. 	exit(EXIT_SUCCESS);
  31. }
  32.  
Success #stdin #stdout 0s 2244KB
comments (?)
stdin
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Standard input is empty
stdout
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1 0 3 1 5 1
2 0 3 2 5 1
3 0 3 3 5 1
4 0 3 4 5 1
5 0 3 5 5 1
https://ideone.com/UHpcSf
language:
C (gcc 8.3)
created:
8 years ago
visibility:
public

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