c++ programming function error -
my full code (couldn't make smaller) : /*password admin*/ #include <iostream> #include <fstream> #include <algorithm> #include <string> using namespace std; //------------------------------- fstream d_base; char path[] = "library books.txt"; void output(){ //this function displaying choices cout << "***********************************" << endl; cout << "1. list books in library" << endl; cout << "2. list available books borrow " << endl; cout << "3. borrow book library" << endl; cout << "4. search book" << endl; cout << "5. add new books"<< endl; cout << "6. delete book" << endl; cout << "7. exit library"<< endl; cout << "***********************************" << endl; } //=======================================================================...