题目内容:
下面是重载为非成员函数的运算符函数原型,其中错误的是A . Fraction operator + (Fraction, Fraction);
B . Fraction operator - (Fraction);
C . Fraction& perator = (Fraction&, Fraction);
D . Fraction& operator += (Fraction&, Fraction);
参考答案:
A . Fraction operator + (Fraction, Fraction);
B . Fraction operator - (Fraction);
C . Fraction& perator = (Fraction&, Fraction);
D . Fraction& operator += (Fraction&, Fraction);