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  1. #include <stdio.h>
  2. #include <math.h>
  3.  
  4. struct tringle{
  5. 	double a;
  6. 	double b;
  7. 	double c;
  8. }hen;
  9.  
  10. int main(void) {
  11. 	hen.a = 5;
  12. 	hen.b = 5;
  13. 	hen.c = 5;
  14.  
  15. 	double q,r,s;
  16. 	q = (hen.a + hen.b + hen.c) / 2;
  17. 	r = q*(q - hen.a) * (q - hen.b) * (q - hen.c);
  18. 	s = sqrt(r);
  19. 	printf("%lf", s);
  20.  
  21. 	return 0;
  22. }
  23.  
Success #stdin #stdout 0s 5264KB
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10.825318
https://ideone.com/khmTCK
language:
C99 (gcc 8.3)
created:
10 days ago
visibility:
public

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