public static TamThucBacHai operator -(TamThucBacHai f1, TamThucBacHai f2)
{
TamThucBacHai temp = new TamThucBacHai
{
a = f1.a - f2.a,
b = f1.b - f2.b,
c = f1.c - f2.c,
};
return(temp);
}
public static TamThucBacHai operator -(TamThucBacHai f)
{
TamThucBacHai temp = new TamThucBacHai
{
a = -f.a,
b = -f.b,
c = -f.c,
};
return(temp);
}
static void Main(string[] args)
{
TamThucBacHai f1 = new TamThucBacHai(1, -3, 2);
TamThucBacHai f2 = new TamThucBacHai(142, -245, 100);
f1 = -f1;
f2 = -f2;
Console.Write("tam thuc 1 :");
f1.Fx();
Console.Write("tam thuc 2 :");
f2.Fx();
TamThucBacHai tong = f1 + f2;
TamThucBacHai Hieu = f1 - f2;
Console.Write("Tong = ");
tong.Fx();
Console.Write("Hieu = ");
Hieu.Fx();
}