/// <summary>
/// 运算:除法
/// </summary>
/// <param name="numA"></param>
/// <param name="numB"></param>
/// <returns></returns>
public static RationalNumber operator /(RationalNumber numA, RationalNumber numB)
{
RationalNumber num = numB.GetReciprocal();
return(numA * num);
}
/// <summary>
/// 运算:减法
/// </summary>
/// <param name="numA"></param>
/// <param name="numB"></param>
/// <returns></returns>
public static RationalNumber operator -(RationalNumber numA, RationalNumber numB)
{
RationalNumber num = -numB;
return(numA + num);
}