Iterate through array C++ -

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• how iterate through list of numbers in c++ 6 answers

newbie question

c++ array as

class app1{ int end = 3;  public: int list[end];  void app1::addinput(){     for(int i=0; i<end; i++){         cout << endl << "enter elements in array: " << endl;         cin >> n;         list[i] = n;     } }  void app1::display(){     cout << endl << "display elements: " <<endl;     for(int i=0; i<sizeof(list) / sizeof(list[1]); i++){         cout << << end;         cout << list[i];     }     cout << endl; } } 

but not display array contents

you have few errors in code. have answered them in line comments can read through sequentially:

class app1 {  private:     int end = 3;    // hsould either declared in explicit public section made, or explicit private section.  public: // indent bro      /* can't declare array in class because          * size end not known @ compile time , compiler          * needs know how many bytes allocate it. if          * constant number, it.          */     // int list[3];      // fine     int* list_ptr = new int[end];     // better; uses heap compiler ok not knowing value of end @ compile time. however, have remember free when you're done.       void addinput(){      // had app1:addinput here. namespace declaration needed if implementing method outside enclosing {} braces of class definition. in case, because implementing within `class app1{ implementation }`, not add namespace before function         for(int i=0; i<end; i++){             cout << endl << "enter elements in array: " << endl;             int n;      // need declare n before can read it.             cin >> n;             list_ptr[i] = n;         }     }      void display(){         cout << endl << "display elements: " <<endl;         for(int i=0; i< end; i++){    // won't work way want; use variable end             cout << "elem " << << " is: " << list_ptr[i] << endl;       // youa accidentally wrote << end instead of << endl;         }         cout << endl;     } };  // need end class declaration semicolon