/in/foo.cc: In function 'int main()':
/in/foo.cc:33:10: warning: comparison with string literal results in unspecified behavior [-Waddress]
    if(x==".") arr[i][j]=0;//water
          ^~~
/in/foo.cc:33:10: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
/in/foo.cc:34:15: warning: comparison with string literal results in unspecified behavior [-Waddress]
    else if(x=="#") arr[i][j]=1;//boat
               ^~~
/in/foo.cc:34:15: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
/in/foo.cc:53:16: error: 'hai' was not declared in this scope
             if(hai[i][j]==1)
                ^~~