/*******************************************
* Math operators + - * /
* *****************************************/
public static Fraction operator +(Fraction f1, Fraction f2)
{
Fraction f3 = new Fraction();
Fraction f4; //these recieve values from the out parameters
Fraction f5;
if (f1.denominator != f2.denominator)
{
//the denominators don't match
//get the greatest common denominator
//the out parameters provide a way of returning
//more than one value from a method
f3.GreatestCommonDenominator(f1, f2, out f4, out f5);
}
else
{
//if they do match we still need to assign
//the values to the new fractions so we
//can do the math below
f4 = f1;
f5 = f2;
}
f3.denominator = f4.denominator;
f3.numerator = f4.numerator + f5.numerator;
//reduce the resulting fraction
f3 = f3.ReduceFraction(f3);
return(f3);
}
public static Fraction operator -(Fraction f1, Fraction f2)
{
Fraction f3 = new Fraction();
Fraction f4;
Fraction f5;
if (f1.denominator != f2.denominator)
{
f3.GreatestCommonDenominator(f1, f2, out f4, out f5);
}
else
{
f4 = f1;
f5 = f2;
}
f3.denominator = f4.denominator;
f3.numerator = f4.numerator - f5.numerator;
f3 = f3.ReduceFraction(f3);
return(f3);
}
public static Fraction operator *(Fraction f1, Fraction f2)
{
Fraction f = new Fraction();
Fraction f3 = new Fraction();
f3.numerator = f1.numerator * f2.numerator;
f3.denominator = f1.denominator * f2.denominator;
f3 = f.ReduceFraction(f3);
return(f3);
}
public static Fraction operator /(Fraction f1, Fraction f2)
{
Fraction f = new Fraction();
Fraction f3 = new Fraction(f2.denominator, f2.numerator);
Fraction f4 = new Fraction();
f4.numerator = f1.numerator * f3.numerator;
f4.denominator = f1.denominator * f3.denominator;
f4 = f.ReduceFraction(f4);
return(f4);
}