Using Non-Type Arguments with Generic Classes : template class « Class « C++






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

Using Non-Type Arguments with Generic Classes

   
#include <iostream>
#include <cstdlib>
using namespace std;
   
template <class T, int size> class MyClass {
  T a[size]; // length of array is passed in size
public:
  MyClass() {
    register int i;
    for(i=0; i<size; i++) a[i] = i;
  }
  T &operator[](int i);
};
   
template <class T, int size>
T &MyClass<T, size>::operator[](int i)
{
  if(i<0 || i> size-1) {
    cout << i << " is out-of-bounds.\n";
    exit(1);
  }
  return a[i];
}
   
int main()
{
  MyClass<int, 10> intob;       
  MyClass<double, 15> doubleob; 
   
  for(int i=0; i<10; i++) 
     intob[i] = i;
  for(int i=0; i<10; i++) 
     cout << intob[i] << endl;
   
  for(int i=0; i<15; i++) 
     doubleob[i] = (double) i/3;
  for(int i=0; i<15; i++) 
     cout << doubleob[i] << "  ";
   
  return 0;
}








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