Zad19/20

#include <iostream>

using namespace std;

float POLE_TROJKATA(float a, float h)
{
    if(a>0 && h>0)
    {
        return (a*h)/2;
    }
    else
    {
        return 0;
    }
}
float POLE_TROJKATA(float x1, float x2, float y1, float y2, float z1, float z2)
{
    return ((x1-z1)*(y2-x2)-(x1-y1)*(z2-x2))/2;
}

int main()
{
    cout << POLE_TROJKATA(5, 12) << endl;
    cout << POLE_TROJKATA(68, 12) << endl;
    cout << POLE_TROJKATA(1, 1) << endl;
    cout << POLE_TROJKATA(4, 5, 2, 8, 3, 3) << endl;
    return 0;
}