c++ - Does in-class member initialization delete the assignment operator? -

so doing project has student, address , transcript class.

the student constructor following:

student::student(int eid, string first, string last, address campusaddress,                    transcript transcript) {     seteid(eid);     setfirst(first);     setlast(last);     setaddress(campusaddress);     this->transcript = transcript; //error says:     "transcript::operator=(const transcript&)" (declared implicitly) cannot referenced     -- deleted function. } 

so thought wrong transcript constructor. instructions leave transcript default constructor empty except initializing variable coursecount 0. (the program reads student data in file , adds courses students transcript).

i've been stuck while can on how fix deleted function error?

here transcript constructor if need it:

transcript::transcript() {    coursecount = 0; } 

edit: transcript prototype

class transcript {    public:       //constructor       transcript();        double computegpa() const;       void addcourse(const string& course, const int hours, const string& grade);       string getcourse(int index) const;       string getgradeearned(const int index) const;       int getcoursecredithours(const int index) const;       int count() const;        string tostring() const;     private:       const int max_student_count = 50;       string coursetaken[50];       int coursecredithours[50];       string gradeearned[50];       int coursecount = 0;        int computetotalcredithours() const;       int computetotalqualitypoints() const; }; 

this has nothing transcript's constructor. @ point error gets reported transcript class member not being constructed. it's been constructed.

class {  public:       a() {}     // ...  };  class b {     int c;    a;  public:     b() : c(0) // gets constructed @ point    {        a=a();    } }; 

this example analogous situation. when instance of b gets constructed, of b's class members, including a, constructed b's constructor's initialization list, @ point indicated comment.

by time "a=a();" happens, a has been constructed, , a=a(); invokes a's assignment operator.

because transcript class has const class member, cannot have default assignment operator. default assignment operator assigns each class member, 1 one, because 1 of class members const, can't assigned, should implement own assignment operator.

however, it's obvious meant declare static const class member, in case:

static const int max_student_count = 50; 

this reason why class's assignment operator (not constructor) has been deleted, , getting error.