Bubble Sort

#include <iostream>
using namespace std;

int main()
{
    int Size,i,j,temp,a=0;
    cout << "Input Array Size: ";
    cin >> Size;
    int Num[Size];
    cout << "Input Values....\n";
    for(i=0; i<Size; i++)
    {
        cin >> Num[i];
    }
    for(i=0; i<Size; i++)
    {
        for(j=a; j<Size-1; j++)
        {
            if(Num[j] > Num[j+1])
            {
                temp = Num[j];
                Num[j] = Num[j+1];
                Num[j+1] = temp;
                a++;
            }
        }
    }
    cout << "\nAfter Sorting..." <<endl;
    for(i=0; i<Size; i++)
    {
        cout << Num[i] << " ";
    }
    cout << "\n";

    return 0;
}