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[主观题]
(13 )在有理数类 Rational 中重载插入运算符 << ,以便按 a/q 形式输出。请将 << 运
算符函
数的定义补充完整。
class Rational{
public:
Rational(int aa, int qq):a(aa),q(qq){ }
friend 【 14 】 operator<<(ostream &out, Rational &x)
{
return (out<<x.a<< ' / ' <<x.q);
}
private:
int a,q;
};
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