public static double TinhChuViTamGiac(TAMGIAC tg)
{
double bc, ac, ab;
bc = XL_DIEM.TinhKhoangCach(tg.B, tg.C);
ac = XL_DIEM.TinhKhoangCach(tg.A, tg.C);
ab = XL_DIEM.TinhKhoangCach(tg.A, tg.B);
return(bc + ac + ab);
}
public static TAMGIAC NhapTamGiac()
{
TAMGIAC tg;
Console.WriteLine("Nhap diem A: ");
tg.A = XL_DIEM.NhapDiem();
Console.WriteLine("Nhap diem B: ");
tg.B = XL_DIEM.NhapDiem();
Console.WriteLine("Nhap diem C: ");
tg.C = XL_DIEM.NhapDiem();
return(tg);
}
public static double TinhChuViDaGiac(DAGIAC dg)
{
double ChuVi = 0;
int N = dg.dsDIEM.Length;
for (int i = 0; i < N - 1; i++)
{
ChuVi = ChuVi + XL_DIEM.TinhKhoangCach(dg.dsDIEM[i],
dg.dsDIEM[i + 1]);
}
ChuVi = ChuVi + XL_DIEM.TinhKhoangCach(dg.dsDIEM[0],
dg.dsDIEM[N - 1]);
return(ChuVi);
}
public static DAGIAC NhapDaGiac()
{
DAGIAC dg;
Console.WriteLine("Nhap so diem: ");
int N = int.Parse(Console.ReadLine());
dg.dsDIEM = new DIEM[N];
for (int i = 0; i < N; i++)
{
Console.WriteLine($"Nhap dinh thu {i+1}: ");
dg.dsDIEM[i] = XL_DIEM.NhapDiem();
}
return(dg);
}
static void Main(string[] args)
{
Console.WriteLine("Hello World!");
Console.WriteLine("Nhap 2 diem a, b");
DIEM a, b;
a = XL_DIEM.NhapDiem();
b = XL_DIEM.NhapDiem();
Console.WriteLine("Khoang cach 2 diem la: ");
double kq = XL_DIEM.TinhKhoangCach(a, b);
string Chuoi = "Ket qua la " + kq;
Console.WriteLine(Chuoi);
Console.WriteLine("Nhap 3 diem A, B, C cua tam giac");
TAMGIAC tg;
tg = XL_TAMGIAC.NhapTamGiac();
double kq_tg = XL_TAMGIAC.TinhChuViTamGiac(tg);
string Chuoi_tg = "Ket qua la " + kq_tg;
Console.WriteLine(Chuoi_tg);
Console.WriteLine("Nhap cac diem cua da giac");
DAGIAC dg;
dg = XL_DAGIAC.NhapDaGiac();
Console.Write("Chu vi da giac la: ");
double kq_dg = XL_DAGIAC.TinhChuViDaGiac(dg);
Console.WriteLine(kq_dg);
}
