public static DROB operator *(DROB a, DROB b)
{
DROB tmp = new DROB();
tmp.numerator = a.numerator * b.numerator;
tmp.denominator = a.denominator * b.denominator;
tmp.Scorot();
return(tmp);
}
public static DROB operator +(DROB a, int b)
{
DROB tmp = new DROB();
tmp.numerator = a.numerator + b * a.denominator;
tmp.denominator = a.denominator;
tmp.Scorot();
return(tmp);
}
public static DROB operator -(DROB a)
{
DROB tmp = new DROB();
tmp.numerator = -a.numerator;
tmp.denominator = a.denominator;
tmp.Scorot();
return(tmp);
}
public static DROB operator -(DROB a, DROB b)
{
DROB tmp = new DROB();
if (a.denominator == b.denominator)
{
tmp.numerator = a.numerator - b.numerator;
tmp.denominator = a.denominator;
}
else
{
tmp.numerator = (a.numerator * b.denominator) - (b.numerator * a.denominator);
tmp.denominator = (a.denominator * b.denominator);
}
tmp.Scorot();
return(tmp);
}
