关于重写输入运算符的疑问
本帖最后由 栗粒粒 于 2020-5-6 17:51 编辑在重写输入运算符时，如果用户需要输入一个虚数（3 + 8i），那么用户可能直接输入3 或者8i这样的实数或者纯虚数，（如果是纯虚数就把real设置为0，实数就把imaginary设置为0）这个时候要怎么判断呢
class Complex
{
public:
friendostream & operator<<(ostream&os, const Complex &c);
friendistream & operator>>(istream&is, Complex &c);
private:
int real,imaginary;
char a,b;
};
ostream &operator<<(ostream &os, const Complex &c)
{
if(c.a == '+')
os<<c.real<<" + "<<c.imaginary<<"i";
else
os<<c.real<<" - "<<c.imaginary<<"i";
return os;
}
istream & operator>>(istream &is , Complex &c)
{
is>>c.real;
//不知道接下去怎么写
return is;
}
#endif // COMPLEX_H_INCLUDED
沙发
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