public static PhanSo operator +(PhanSo a, PhanSo b)
{
PhanSo phanSoTong = new PhanSo();
phanSoTong.tuso = b.tuso * a.mauso + b.mauso * a.tuso;
phanSoTong.mauso = b.mauso * a.mauso;
return(phanSoTong);
}
public static PhanSo operator /(PhanSo ps1, PhanSo ps2)
{
PhanSo tich = new PhanSo();
tich.tuSo = ps1.tuSo * ps2.tuSo;
tich.mauSo = ps1.mauSo * ps2.mauSo;
return(tich);
}
public static PhanSo operator +(PhanSo ps1, PhanSo ps2)
{
PhanSo tong = new PhanSo();
tong.tuSo = ps1.tuSo * ps2.mauSo + ps2.tuSo * ps1.mauSo;
tong.mauSo = ps1.mauSo * ps2.mauSo;
return(tong);
}
public static PhanSo operator -(PhanSo ps1, PhanSo ps2)
{
PhanSo hieu = new PhanSo();
hieu.tuSo = ps1.tuSo * ps2.mauSo - ps2.tuSo * ps1.mauSo;
hieu.mauSo = ps1.mauSo * ps2.mauSo;
return(hieu);
}
private void btnCongPhanSo_Click(object sender, EventArgs e)
{
int tuSoA = int.Parse(this.txtBoxTuSoA.Text);
int mauSoA = int.Parse(this.txtBoxMauSoA.Text);
int tuSoB = int.Parse(this.txtBoxTuSoB.Text);
int mauSoB = int.Parse(this.txtBoxMauSoB.Text);
PhanSo KQ1 = new PhanSo(tuSoA, mauSoA) + new PhanSo(tuSoB, mauSoB);
KQ1.RutGon();
lblKetQua.Text = "Kết quả cộng 2 phân số là: " + KQ1.toString();
}
private void btnCongPhanSo_Click(object sender, EventArgs e)
{
int tuSoA = int.Parse(this.txtBoxTuSoA.Text);
int mauSoA = int.Parse(this.txtBoxMauSoA.Text);
int tuSoB = int.Parse(this.txtBoxTuSoB.Text);
int mauSoB = int.Parse(this.txtBoxMauSoB.Text);
PhanSo kq = new PhanSo(tuSoA, mauSoA) + new PhanSo(tuSoB, mauSoB);
kq = PhanSo.Reduce(kq);
this.lblKetQua.Text = "Ket qua cong hai phan so la: " + kq.tuSo + "/" + kq.mauSo;
this.lblKetQua.Location = new System.Drawing.Point(this.Width / 2 - this.lblKetQua.Width / 2, this.lblKetQua.Location.Y);
}
private void btnCongPhanSo_Click(object sender, EventArgs e)
{
int tusoa = int.Parse(this.txtBoxtusoa.Text);
int mausoa = int.Parse(this.txtBoxmausoa.Text);
int tusob = int.Parse(this.txtBoxtusob.Text);
int mausob = int.Parse(this.txtBoxmausob.Text);
PhanSo kq = new PhanSo(tusoa, mausoa) + new PhanSo(tusob, mausob);
kq = PhanSo.Reduce(kq);
this.label5.Text = "ket qua cong 2 phan so la: " + kq.tuso + "/" + kq.mauso;
this.label5.Location = new System.Drawing.Point(this.Width / 2 - this.label5.Width / 2, this.label5.Location.Y);
}
public static PhanSo Reduce(PhanSo phanSo)
{
int divisor, numerator, denominator, reducedNumerator, reducedDenominator;
numerator = phanSo.tuso;
denominator = phanSo.mauso;
divisor = gcd(numerator, denominator);
if (divisor != 1)
{
reducedNumerator = divvision(numerator, divisor);
reducedDenominator = divvision(denominator, divisor);
return(new PhanSo(reducedNumerator, reducedDenominator));
}
else
{
return(phanSo);
}
}
static void Main(string[] args)
{
int x;
Console.WriteLine("Nhap \'1\' neu muon cong");
Console.WriteLine("Nhap \'2\' neu muon tru");
Console.WriteLine("Nhap \'3\' neu muon nhan");
Console.WriteLine("Nhap \'4\' neu muon chia");
Console.WriteLine("Nhap \'5\' neu toi gian");
x = int.Parse(Console.ReadLine());
PhanSo ps1 = new PhanSo();
PhanSo ps2 = new PhanSo();
PhanSo ps3 = new PhanSo();
switch (x)
{
case 1:
{
Console.WriteLine("Phan so 1: ");
ps1.Nhap();
Console.WriteLine("Phan so 2: ");
ps2.Nhap();
ps3 = ps1 + ps2;
Console.WriteLine("{0}/{1} + {2}/{3} = {4}/{5}", ps1.TuSo, ps1.MauSo, ps2.TuSo, ps2.MauSo, ps3.TuSo, ps3.MauSo);
}
break;
case 2:
{
Console.WriteLine("Phan so 1: ");
ps1.Nhap();
Console.WriteLine("Phan so 2: ");
ps2.Nhap();
ps3 = ps1 - ps2;
Console.WriteLine("{0}/{1} - {2}/{3} = {4}/{5}", ps1.TuSo, ps1.MauSo, ps2.TuSo, ps2.MauSo, ps3.TuSo, ps3.MauSo);
}
break;
case 3:
{
Console.WriteLine("Phan so 1: ");
ps1.Nhap();
Console.WriteLine("Phan so 2: ");
ps2.Nhap();
ps3 = ps1 * ps2;
Console.WriteLine("{0}/{1} * {2}/{3} = {4}/{5}", ps1.TuSo, ps1.MauSo, ps2.TuSo, ps2.MauSo, ps3.TuSo, ps3.MauSo);
}
break;
case 4:
{
Console.WriteLine("Phan so 1: ");
ps1.Nhap();
Console.WriteLine("Phan so 2: ");
ps2.Nhap();
ps3 = ps1 / ps2;
Console.WriteLine("{0}/{1} / {2}/{3} = {4}/{5}", ps1.TuSo, ps1.MauSo, ps2.TuSo, ps2.MauSo, ps3.TuSo, ps3.MauSo);
}
break;
case 5:
{
Console.WriteLine("Nhap phan so muon toi gian: ");
ps1.Nhap();
ps1.KiemTra();
Console.WriteLine("Dang kiem tra...");
if (ps1.KiemTra())
{
Console.WriteLine("Phan so da toi gian.");
}
else
{
ps1.ToiGian();
Console.WriteLine("Sau khi toi gian: " + ps1.TuSo + "/" + ps1.TuSo);
}
}
break;
default:
{
Console.WriteLine("Nhap sai !!!");
break;
}
}
}
// So sanh bang a / b va c / d => a / b - c / d = 0
public static bool operator ==(PhanSo a, PhanSo b)
{
PhanSo kq = a - b;
return(kq.tuSo == 0);
}
public static bool operator <(PhanSo a, PhanSo b)
{
PhanSo kq = a - b;
return(kq.tuso < 0);
}
