I want to print a pattern of ones and zeroes [closed]

for n=5 the desired output is :-

1

01

010

1010

10101

But this code prints only the first 1 one and all other ones are printed as zeroes.

int n;
cin>>n;
int c=1;
for(int i=1;i<=n;i++)
{
  for(int j=1;j<=i;j++)
  {
      cout<<c;
      if(c=1)
      {
          c=0
      }
      else{
        c=1
      }
    

  }
  cout<<endl;
}
return 0;

}