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  1. #include <stdio.h>
  2. #include <math.h>
  3.  
  4. struct Triangle {
  5.     double a;
  6.     double b;
  7.     double c;
  8. };
  9.  
  10. int main(void)
  11. {
  12.     struct Triangle t;
  13.     double p; 
  14.     double s;  
  15.  
  16.     scanf("%lf", &t.a);
  17.     scanf("%lf", &t.b);
  18.     scanf("%lf", &t.c);
  19.  
  20.     p = (t.a + t.b + t.c) / 2.0;
  21.     s = sqrt(s * (s - t.a) * (s - t.b) * (s - t.c));
  22.  
  23.  
  24.     printf("a: %.0lf\n", t.a);
  25.     printf("b: %.0lf\n", t.b);
  26.     printf("c: %.0lf\n", t.c);
  27.     printf("三角形の面積: %f\n", s);
  28.  
  29.     return 0;
  30. }
  31.  
Success #stdin #stdout 0.01s 5320KB
comments (?)
stdin
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5 5 5
stdout
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a: 5
b: 5
c: 5
三角形の面積: 10.825318
https://ideone.com/2x5hLi
language:
C (gcc 8.3)
created:
3 days ago
visibility:
public

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