0 1 pattern in c 2b 2b

1#include<bits/stdc++.h>
2using namespace std;
3int main()
4{
5	int n;
6	cin>>n;
7	for(int i=1;i<=n;i++){
8		for(int j=1;j<=i;j++){
9			if((i+j)%2==0){cout<<"1";
10			}
11			else{
12				cout<<"0";
13			}
14			
15		}cout<<endl;
16	}
17	return 0;
18	
19}