操作符重载的小问题
RationalNumber RationalNumber::operator-(RationalNumber a)
{
int i;
int common,minCommonMultiple;
common = a.maxCommonFactor(a.Denominator,Denominator);
minCommonMultiple = a.Denominator * Denominator / common;
a.Molecular = minCommonMultiple / a.Denominator * a.Molecular;
a.Denominator = minCommonMultiple;
Molecular = minCommonMultiple / Denominator * Molecular;
Denominator = minCommonMultiple;
Molecular = Molecular-a.Molecular;
if (Molecular > 0 &&(i = maxCommonFactor(Denominator,Molecular)) != 1)//化简分数
{
Denominator /= i;
Molecular /= i;
}
return *this;
}
这里定义了一个RationalNumber的对象a。为什么a可以直接访问私有成员Denominator和Molecular??
同时，这个函数是重载了“-“进行分数间的减法，为什么减出来的结果不正确呢（1/2 - 2/4 = 1/2!!!）？
[解决办法]
