/in/foo.c: In function 'main':
/in/foo.c:9:13: error: expected ')' before ';' token
  if(a<b)(t=a;a=b;b=t;)
             ^
/in/foo.c:10:2: error: expected ';' before 'if'
  if(a<c)(t=a;a=c;c=t;)
  ^~
/in/foo.c:6:6: warning: variable 't' set but not used [-Wunused-but-set-variable]
  int t;
      ^