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  1. #include <stdio.h>
  2. #include<math.h>
  3. struct helon{
  4. 	double x;
  5. 	double y;
  6. 	double z;
  7. } t;
  8.  
  9. int main(void){
  10.  
  11. scanf("%lf",&t.x); printf("a:%.0lf\n",t.x);
  12. scanf("%lf",&t.y); printf("b:%.0lf\n",t.y);
  13. scanf("%lf",&t.z); printf("c:%.0lf\n",t.z);
  14.  
  15. double p;
  16. double s;
  17. p=(t.x+t.y+t.z)/2;
  18. s=sqrt(p*(p-t.x)*(p-t.y)*(p-t.z));
  19. printf("三角形の面積%lf",s);
  20. 	return 0;
  21. }
  22.  
Success #stdin #stdout 0.01s 5284KB
comments (?)
stdin 
5
5
5
stdout 
a:5
b:5
c:5
三角形の面積10.825318
https://ideone.com/pqQ9Kt
language:
C (gcc 8.3)
created:
11 days ago
visibility:
public

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