Submission #121851

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Source Code Expand

#include <iostream>
using namespace std;

int main()
{
  int xa, ya, xb, yb, xc, yc;
  cin >> xa >> ya >> xb >> yb >> xc >> yc;

  xb -= xa;
  xc -= xa;
  yb -= ya;
  yc -= ya;

  double s = (double)(xb * yc - yb * xc) / 2;
  s = s > 0 ? s : -s;

  printf("%0.1f\n", s);

  return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:17:22: error: ‘printf’ was not declared in this scope