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  1. #include <iostream>
  2. #include <vector>
  3. using namespace std;
  4.  
  5. class BaseClass{
  6.     int x;
  7. public:
  8.     BaseClass(){x = 0;}
  9.  
  10.     friend istream& operator>>(istream& stream, BaseClass &a){ stream >> a.x; return stream; }
  11.     friend ostream& operator<<(ostream& stream, BaseClass const &a)
  12.         { stream << "X = " << a.x << endl; return stream; }
  13.     void print(){ cout << x; }
  14. };
  15.  
  16. class SubClass1: public BaseClass{
  17.     int y;
  18. public:
  19.     SubClass1(){y = 0;}
  20.  
  21.     friend istream& operator>>(istream& stream, SubClass1 &b)
  22.         {
  23.             cout << "hit" << endl;
  24.             stream >> dynamic_cast<BaseClass&>(b);
  25.  
  26.             //WON'T RUN THIS PART OF CODE __________________________
  27.             stream >> b.y;
  28.         }
  29.     friend ostream& operator<<(ostream& stream, SubClass1 const &b)
  30.         { stream << "y = " << b.y << endl; return stream; }
  31.  
  32.     void print(){ cout << y; }
  33. };
  34.  
  35. BaseClass* createNewClass(BaseClass * temp)
  36. {
  37.     cout << "Input 2 values: ";
  38.     cin >> *temp;
  39.     return temp;
  40. }
  41.  
  42. int main()
  43. {
  44.     vector<BaseClass*> db;
  45.     db.push_back(createNewClass(new SubClass1));
  46.  
  47.  
  48.     cout << "\nPrinting Data: " << endl;
  49.     cout << *db[0] << endl;
  50. }
Success #stdin #stdout 0s 2864KB
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stdin
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1 2
stdout
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Input 2 values: 
Printing Data: 
X = 1
https://ideone.com/QM5sRY
language:
C++ 4.3.2 (gcc-4.3.2)
created:
10 years ago
visibility:
public

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