/in/foo.c: In function 'main':
/in/foo.c:8:7: warning: suggest parentheses around comparison in operand of '^' [-Wparentheses]
  if (a>-10^10 && a<10^10,b>-10^10 && b<10^10)
      ~^~~~
/in/foo.c:8:19: warning: suggest parentheses around comparison in operand of '^' [-Wparentheses]
  if (a>-10^10 && a<10^10,b>-10^10 && b<10^10)
                  ~^~~
/in/foo.c:8:27: warning: suggest parentheses around comparison in operand of '^' [-Wparentheses]
  if (a>-10^10 && a<10^10,b>-10^10 && b<10^10)
                          ~^~~~
/in/foo.c:8:39: warning: suggest parentheses around comparison in operand of '^' [-Wparentheses]
  if (a>-10^10 && a<10^10,b>-10^10 && b<10^10)
                                      ~^~~
/in/foo.c:8:25: warning: left-hand operand of comma expression has no effect [-Wunused-value]
  if (a>-10^10 && a<10^10,b>-10^10 && b<10^10)
                         ^