Generic Vector : template class « template « C++ Tutorial

1. C++ Tutorial
2. template
3. template class

#include <iostream.h>
#include <math.h>
template <class T>

class Vector
{
  T * pData;
  int nSize;
  public:
    Vector(int);
    ~Vector() {delete [] pData;}
    T& operator [] (int i) {return pData[i];}
};
template <class T>
Vector <T>::Vector(int n)
{
       pData = new T[n];
    nSize = n;
};
main()
{
    Vector <int> iV(4);
    int i;
    for ( i = 0;i < 4;i++)
       iV[i] = i*i;
    for ( i = 0;i < 4;i++)
          cout << iV[i] << "  ";
    cout << endl;
    Vector <double> dV(4);
    for ( i = 0; i < 4;i++)
      dV[i] = sqrt(i);
    for ( i = 0;i < 4;i++)
         cout << dV[i] << "  ";
    cout << endl;
       return 0;
}

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0  1  1.41421  1.73205