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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main()
  5. {
  6.     int n;
  7.     cin>>n;
  8.     for(int N=n<<1,y=1;y<=N;y+=2,cout<<endl) for(int x=1;x<=N;x+=2) cout<<((abs(y-n)+abs(x-n))<=n?'#':'.');
  9.     return 0;
  10. }
  11.  
Success #stdin #stdout 0s 4388KB
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..#..
.###.
#####
.###.
..#..
https://ideone.com/ClBv8n
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
public

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