public static bool TryParse(string text, out Rational result)
{
// depends on whether or not there is a '/' character.
string[] fields = text.Split('/');
if (fields.Length == 2)
{
if (Rational.TryParse(fields[0], out Rational num) && Rational.TryParse(fields[1], out Rational den))
{
result = num / den;
return(true);
}
else
{
result = Rational.Zero;
return(false);
}
}
else if (fields.Length == 1)
{
// No. no slash.
string[] decfields = text.Split('.');
if (decfields.Length == 2)
{
if (long.TryParse(decfields[0], out long n) && long.TryParse(decfields[1], out long d))
{
int pow = decfields[1].Length;
long f = 10;
for (int i = 1; i < pow; ++i)
{
f *= 10;
}
result = new Rational(n * f + d, f);
return(true);
}
else
{
result = Rational.Zero;
return(false);
}
}
else if (decfields.Length == 1)
{
if (long.TryParse(decfields[0], out long num))
{
result = new Rational(num);
return(true);
}
else
{
result = Rational.Zero;
return(false);
}
}
else
{
result = Rational.Zero;
return(false);
}
}
else
{
result = Rational.Zero;
return(false);
}
}
public Rational2(Rational x, Rational y)
{
this.x = x;
this.y = y;
}