/in/foo.c: In function 'main':
/in/foo.c:6:10: warning: left-hand operand of comma expression has no effect [-Wunused-value]
  for(x>=0, y<=32767)
          ^
/in/foo.c:6:10: warning: statement with no effect [-Wunused-value]
/in/foo.c:6:20: error: expected ';' before ')' token
  for(x>=0, y<=32767)
                    ^
/in/foo.c:6:20: error: expected expression before ')' token