fork download 
  1. #include <stdio.h>
  2. #include <math.h>
  3.  
  4. // 三角形の3辺を格納する構造体
  5. struct student{
  6.     double a;
  7.     double b;
  8.     double c;
  9. };
  10.  
  11.  
  12.  
  13.  
  14. int main() {
  15. 	double p,k,s;
  16.     struct student A;
  17.     scanf("%lf",&A.a);
  18.     scanf("%lf",&A.b);
  19.     scanf("%lf",&A.c);
  20.  
  21.     p=(A.a+A.b+A.c)/2;
  22.     k=p*(p-A.a)*(p-A.b)*(p-A.c);
  23.     s=sqrt(k);
  24.  
  25.  
  26.     printf("a = %lf\n", A.a);
  27.     printf("b = %lf\n", A.b);
  28.     printf("c = %lf\n", A.c);
  29.     printf("%lf\n",s);
  30.  
  31.     return 0;
  32. }
  33.  
  34.  
Success #stdin #stdout 0s 5272KB
comments (?)
stdin 
5
5
5
stdout 
a = 5.000000
b = 5.000000
c = 5.000000
10.825318
https://ideone.com/wS9sNj
language:
C (gcc 8.3)
created:
11 days ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!