Submission #1401486

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Source Code Expand

#include <iostream>

int main(){
 double a1,a2,b1,b2,c1,c2;
 std::cin>>a1>>a2>>b1>>b2>>c1>>c2;
 b1-=a1,c1-=a1,b2-=a2,c2-=a2;
 std::cout<<(fabs(b1*c2-b2*c1)/2.0)<<"\n";
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:7:30: error: ‘fabs’ was not declared in this scope
  std::cout<<(fabs(b1*c2-b2*c1)/2.0)<<"\n";
                              ^