/in/foo.cc: In function 'int main()':
/in/foo.cc:23:12: warning: 'y' may be used uninitialized in this function [-Wmaybe-uninitialized]
   pic[x][y]='*';
   ~~~~~~~~~^~~~
/in/foo.cc:63:8: note: 'y' was declared here
  int x,y;
        ^
/in/foo.cc:23:12: warning: 'x' may be used uninitialized in this function [-Wmaybe-uninitialized]
   pic[x][y]='*';
   ~~~~~~~~~^~~~
/in/foo.cc:63:6: note: 'x' was declared here
  int x,y;
      ^