Data Structures using C++

    #include <iostream> 
    using namespace std; 
    template <class X> 
    void bubble(X *data, int size) 
    { 
      register int a, b; 
      X t; 
      for(a=1; a < size; a++) 
       for(b=size-1; b >= a; b--) 
     if(data[b-1] > data[b]) 
     { 
       t = data[b-1]; 
       data[b-1] = data[b]; 
       data[b] = t; 
     } 
    } 
    int main() 
    { 
      int i[] = {3, 2, 5, 6, 1, 8, 9, 3, 6, 9}; 
      double d[] = {1.2, 5.5, 2.2, 3.3}; 
      int j; 
      bubble(i, 10); // sort ints 
      bubble(d, 4); // sort doubles 
      for(j=0; j<10; j++) 
      cout << i[j] << ' '; 
      cout << endl; 
      for(j=0; j<4; j++) 
      cout << d[j] << ' '; 
      cout << endl; 
      return 0; 
    }