pattern9.cpp

#include<iostream>
using namespace std;
int main()
{
    int n=5;
    for(int i=1;i<=n;i++)
    {
        for(int j=1;j<=i;j++)
     {
         if((i%2==0 && j%2==0)||(i%2!=0 && j%2!=0))
         {
             cout<<"1"<<" ";

         }
         else
         {
             cout<<"0"<<" ";

         }
         
     }
     cout<<endl;

    }
    return 0;

}