Submission #112252

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Source Code Expand

#include <iostream>
#include <string>
#include <vector>
//#include <math.h>
using namespace std;

int main(int argc,const char* argv[]){
    int ax,ay,bx,by,cx,cy;
    cin >> ax>>ay>>bx>>by>>cx>>cy;
    double S=1.0;
    S*=abs((bx-ax)*(cy-ay)-(by-ay)*(cx-ax))*0.5;
    cout << S << endl;
    return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main(int, const char**)’:
./Main.cpp:11:43: error: ‘abs’ was not declared in this scope