Submission #111605

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Source Code Expand

#include <iostream>

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

	int xab = xb - xa;
	int yab = yb - ya;
	int xac = xc - xa;
	int yac = yc - ya;
	std::cout << std::abs(xab * yac - xac * yab) / 2.0 << std::endl;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:12:15: error: ‘abs’ is not a member of ‘std’