Function Templates in C++

Example:

Lets write the template function that can sort array, of any data type, using quick sort:

    template <typename T> void quickSort(T *arr, int low, int high)
    {
        if(low < high)
        {
            int mid = partition<T>(arr, low, high);
            quickSort<T>(arr, low, mid-1);
            quickSort<T>(arr, mid+1, high);
        }
    }
    template<typename T> int partition(T *arr, int low, int high)
    {
        int pivot = l;   // Index of Pivot element
        while(low < high)
        {
            while(arr[low] <= arr[pivot])
                l++;      // Move l forward
            while(arr[high] > arr[pivot])
                h--;       // Move h backward
            if(low < high)
                swap(arr[low], arr[high]);
        }
        /* h is final position for the pivot */
        swap(arr[pivot], arr[high]);
        return high;
    }