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  1. #include <stdio.h>
  2. #include <math.h>
  3. struct triangle{
  4. 	double a;
  5. 	double b;
  6. 	double c;
  7. };
  8.  
  9. int main(void) {
  10. 	struct triangle tri;
  11. 	scanf("%lf",&tri.a);
  12. 	scanf("%lf",&tri.b);
  13. 	scanf("%lf",&tri.c);
  14.  
  15. 	double p;
  16. 	p=(tri.a+tri.b+tri.c)/2;
  17. 	double t;
  18. 	t=p*(p-tri.a)*(p-tri.b)*(p-tri.c);
  19. 	double s;
  20. 	s=sqrt(t);
  21. 	printf("a:%lf b:%lf c:%lf\n",tri.a,tri.b,tri.c);
  22. 	printf("s=%lf",s);
  23. 	return 0;
  24. }
Success #stdin #stdout 0s 5276KB
comments (?)
stdin 
5 5 5
stdout 
a:5.000000 b:5.000000 c:5.000000
s=10.825318
https://ideone.com/9vAgYp
language:
C (gcc 8.3)
created:
11 days ago
visibility:
public

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