运算符重载
最后更新于：2022-04-02 02:06:38
[TOC]
## 转换运算符
```
class Fraction{
public:
Fraction(int n,int d=1):
m_Numerator(n),
m_Denominator(d){}
// 转 dobule
operator double() const{
return (double)m_Numerator/m_Denominator;
}
// 转 QString
operator QString() const{
return QString("%1/%2").arg(m_Numerator).arg(m_Denominator);
}
private:
int m_Numerator,m_Denominator;
};
QTextStream& operator<<(QTextStream& os,const Fraction& f) {
os<<"operator<<"<(f);
return os;
}
```
使用
```
Fraction fra(4,3);
double d=fra;
QString str=fra;
qDebug()<0);
m_p=new int[m_size];
}
int& operator[](int i){
assert(i
';