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POC++ Fixing a programming excercise
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11025158
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CreationDate
2012-06-14T00:13:27.037
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2012-10-18T15:23:58.950
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2012-10-18T15:23:58.950
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text
Body
My teacher asked the class to fix the error in this program. Actually it seems to be a crappy program; I just typed it exactly how it is in the sheet, and got this error: Well Now I have just change some things, but get this exception at run time: Microsoft C++ exception: [rethrow] at memory location 0x00000000.. The code is now like so: (The variable an class names are now in spanish, sorry for the inconviniences) <pre><code> #include <iostream> #include <exception> #include <stack> using namespace std; class EPilaVacia : public exception{ public: const char* what() const throw(){ return "Error: Pila Vacía"; } }; template <class T, int max=100> class Pila{ private: stack<T*> *pila; int cont; public: Pila() : cont(0){ pila=new stack<T*>(); } virtual void apilar( T* pt){ if(cont<max){ pila->push(pt); //respuesta 2 } } virtual void apilar(T t){ if(cont<max){ pila->push(&t); //respuesta 3 } } T tope() const throw (EPilaVacia){ if(cont>0){ pila->top(); //respuesta 4 }else{ throw ; //respuesta 5 } } T& desapilar() throw (EPilaVacia){ if(cont>0){ pila->pop(); //respuesta 6 }else{ throw ; //respuesta 7 } } int size() const{ return pila->size(); } }; class Figura{ public: virtual void print(){ cout<< "FIGURA" <<endl; } }; class Circulo : public Figura{ public: void print(){ cout<<"CIRCULO"<<endl; } }; class Triangulo : public Figura{ public: void print(){ cout<<"TRIANGULO"<<endl; } }; int main(){ Pila<Figura*> *pfiguras= new Pila<Figura*>(); pfiguras->apilar(new Circulo()); pfiguras->apilar(new Triangulo()); Pila<Figura*> pfiguras2(*pfiguras); pfiguras->tope()->print(); pfiguras->desapilar(); pfiguras->tope()->print(); pfiguras->desapilar(); pfiguras2.tope()->print(); system("Pause"); return 0; } </code></pre>
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C++ Fixing a programming excercise
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1. This table or related slice is empty.
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1. This table or related slice is empty.
PostTypePostTypeId
1. PTQuestion
UserLastEditorUserId
1. USBill the Lizard
UserOwnerUserId
1. USJosé Del Valle
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1. PO
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