/in/foo.c: In function 'main':
/in/foo.c:5:7: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses]
  a<=(2^32-1)&&a>=(-2^31);
       ^
/in/foo.c:5:13: warning: statement with no effect [-Wunused-value]
  a<=(2^32-1)&&a>=(-2^31);
  ~~~~~~~~~~~^~~~~~~~~~~~
/in/foo.c:6:7: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses]
  b<=(2^32-1)&&b>=(-2^31);
       ^
/in/foo.c:6:13: warning: statement with no effect [-Wunused-value]
  b<=(2^32-1)&&b>=(-2^31);
  ~~~~~~~~~~~^~~~~~~~~~~~
/in/foo.c:7:7: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses]
  c<=(2^32-1)&&c>=(-2^31);
       ^
/in/foo.c:7:13: warning: statement with no effect [-Wunused-value]
  c<=(2^32-1)&&c>=(-2^31);
  ~~~~~~~~~~~^~~~~~~~~~~~
/in/foo.c:5:13: warning: 'a' is used uninitialized in this function [-Wuninitialized]
  a<=(2^32-1)&&a>=(-2^31);
  ~~~~~~~~~~~^~~~~~~~~~~~
/in/foo.c:6:13: warning: 'b' is used uninitialized in this function [-Wuninitialized]
  b<=(2^32-1)&&b>=(-2^31);
  ~~~~~~~~~~~^~~~~~~~~~~~
/in/foo.c:7:13: warning: 'c' is used uninitialized in this function [-Wuninitialized]
  c<=(2^32-1)&&c>=(-2^31);
  ~~~~~~~~~~~^~~~~~~~~~~~