Intersection

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#include<bits/stdc++.h>
using namespace std;
int main()
{
    int x,y,i,j,f=1;
    cout<<"Enter the size of first array :";
    cin>>x;
    cout<<"Enter the size of second array :";
    cin>>y;
    int a[x], b[y];
    cout<<"Enter the elements of first array :";
    for(i=0;i<x;i++)
    cin>>a[i];
    cout<<"Enter the elements of second array :";
    for(i=0;i<y;i++)
    cin>>b[i];
    for(i=0;i<x;i++)
    for(j=0;j<y;j++)
    if(a[i]==b[j])
    {cout<<a[i]<<" ";f=0;}
    if(f==1)
        cout<<"NO common elements !";
}

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