c++ - overriding istream and ofstream -

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im having trouble overriding << , >> operators file stream.

struct reading {     int hour;     double temp;      reading()         : hour{ 0 }, temp{ 0 } {};     reading(int h, double t)         : hour{ h }, temp{ t } {}; };  ifstream& operator<<(ifstream& ifs, const reading& reading) {     return ifs << '(' << reading.hour << ',' << reading.temp << ')' << endl; }  ofstream& operator>>(ofstream& ofs, reading& reading) {     ofs >> reading.hour;     ofs >> reading.temp;     return ofs; }

i don't have problem when try override iostream in same manner, file stream. indicated i'm doing wrong please?

you seem have confused ifstream (short in-filestream) input , ofstream (short out-filestream) output.


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