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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	double a , b, c;
  6. 	cin >> a >> b >> c;
  7. 	double p = ( a + b + c ) / 2;
  8.     cout << fixed << setprecision(6) << sqrt( p * ( p - a ) * ( p - b ) * ( p - c ));
  9. }
Success #stdin #stdout 0s 5312KB
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stdin
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3 4 5
stdout
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6.000000
https://ideone.com/OiwRGm
language:
C++ (gcc 8.3)
created:
11 hours ago
visibility:
public

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