error: no match for ‘operator<<’ (operand types are ‘std::basic_
（認知有限，如有不妥，還請告知，歡迎討論）
完整報錯：error: no match for ‘operator<<’ (operand types are ‘std::basic_ostream<char>’ and ‘const char [2]’)
解決方法：
加上#include <iostream>
=END=
=reference=
[1]https://stackoverflow.com/questions/42175638/error-while-operator-overloading-error-no-match-for-operator-operand-type
標簽：
