c-resources/CPlusPlus20ForProgrammers-m.../examples/shapes/shapes.cpp

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#include <iostream>
#include <vector>
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/*class GBaseShape {
public:
GBaseShape();
virtual void EvalVolume();
virtual void EvalSurface();
double GetVolume() const;
double GetVolume() const;
private:
double Volume, Surface;
bool IfVolumeCalculated;
bool IfSurfaceCalculated;
};
*/
class Cube {
public:
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explicit Cube(double _L = 0, double _W = 0, double _H = 0, long int N = 0);
~Cube(){
// std::cout << "Destructor was run!\n";
delete Data;
}
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// void SetAll();
void SetL(double _L);
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// void SetB(double _B);
// void SetC(double _C);
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const double& GetL();
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double& operator[] (int i){
if(i==1)
return L;
if (i==2)
return W;
if (i==3)
return H;
return tmp;
}
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private:
double L,W,H;
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double* Data;
double tmp;
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};
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Cube::Cube(double _L , double _W , double _H, long int N ){
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SetL(_L);
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Data = new double[N];
//std::cout << "Constructor was run!\n";
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}
void Cube::SetL(double _L){
L = _L;
}
const double& Cube::GetL() {
return L;
}
int main(){
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Cube cube(5,6,10);
//cube.GetL()++;
// for (int i{0}; i<10000; i++)
// {
// auto c = Cube(0,0,0,1000000);
// }
//for (int i{0}; i<10000000000; i++)
// std::cout << "!!!\n";
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std::cout << cube[1] << "\n";
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return 0;
}