c++ - How to allow a member function that's defined inside the class declaration to be called by constant objects of said class -

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i have book class within namespace literature , following declaration implementation pair doesn't work:

namespace literature {     class book{     public:         //getter method         condition check(){return status;} const          bool operator==(const book&);         bool operator!=(const book&);     } }

the logical overload's declaration:

namespace literature{     bool book::operator==(const book& right)     {return true;}      bool book::operator!=(const book& right)     {return false;} }

for reason, implementation operator != works while 1 == doesn't , instead states prototype == overload returns const bool instead of bool

although answer j.alvaro.t shows done overcome problem. answer text misleading. main issue line of code:

condition check() {return status;} const

is grammatically malformed. intention make method const method , const keyword should appear before function body. characters after function body not parsed part of function definition , become part of next statement.


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