/in/foo.cc: In function 'int main()':
/in/foo.cc:15:6: warning: unused variable 'ab' [-Wunused-variable]
  int ab=a>b?a:b;
      ^~
/in/foo.cc:16:6: warning: unused variable 'ac' [-Wunused-variable]
  int ac=a>c?a:c;
      ^~
/in/foo.cc:17:6: warning: unused variable 'bc' [-Wunused-variable]
  int bc=b>c?b:c;
      ^~
/in/foo.cc:15:10: warning: 'a' is used uninitialized in this function [-Wuninitialized]
  int ab=a>b?a:b;
         ~^~
/in/foo.cc:15:10: warning: 'b' is used uninitialized in this function [-Wuninitialized]
/in/foo.cc:16:10: warning: 'c' is used uninitialized in this function [-Wuninitialized]
  int ac=a>c?a:c;
         ~^~