- 26. 2 - čtvrtek 11:00

- dnes: třídy a objekty, public/protected/private, constructor/destructor

# Konstruktory
- můžu přetěžovat, ale **POZOR**:

```
    TridaA(void) //constructor pro inicializaci promenne
    {
      this->a = 0;
      this->b = 0;
      this->c = 0;
      std::cout << "Byl zavolan konstruktor bez arg." << std::endl;
    }

    TridaA(int a) //inicializace z argumentu constructoru
    {
      this->a = a;
      this->b = 0;
      this->c = 0;
      std::cout << "Byl zavolan konstruktor s arg." << std::endl;
    }
    
    TridaA(int a, int b = 42, int c = 64)
    {
      this->a = a;
      this->b = b;
      this->c = c;
    }
```

Chyby kompilatoru:
```
main.cpp: In function ‘int main()’:
main.cpp:44:16: error: call of overloaded ‘TridaA(int)’ is ambiguous
   44 |   TridaA obj1(1); //inicializujeme objekt
      |                ^
main.cpp:44:16: note: there are 4 candidates
main.cpp:31:5: note: candidate 1: ‘TridaA::TridaA(int, int, int)’
   31 |     TridaA(int a, int b = 42, int c = 64)
      |     ^~~~~~
main.cpp:23:5: note: candidate 2: ‘TridaA::TridaA(int)’
   23 |     TridaA(int a) //inicializace z argumentu constructoru
      |     ^~~~~~
main.cpp:3:7: note: candidate 3: ‘constexpr TridaA::TridaA(const TridaA&)’
    3 | class TridaA
      |       ^~~~~~
main.cpp:3:7: note: candidate 4: ‘constexpr TridaA::TridaA(TridaA&&)’

```

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