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  1. #include <cstdio>
  2. #include <algorithm>
  3. using namespace std;
  4.  
  5. int main()
  6. {
  7.     double x, y, z;
  8. 	scanf( "%lf %lf %lf", &x, &y, &z );
  9.     //if the triangle exists
  10.     if( x + y + z > 2*max(x, max(y, z) ) )
  11.     {
  12.         //if it is acute
  13.         if( ( x*x + y*y - z*z ) / ( 2*x*y ) ) printf( "The triangle is acute." );
  14.         else printf( "The triangle is not acute." );
  15.     }
  16.     else printf( "The triangle doesn't exist." );
  17.     return 0;
  18. }
Success #stdin #stdout 0s 3344KB
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The triangle is acute.
https://ideone.com/v8Hqb0
Абрамов, 47
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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