/in/foo.c: In function 'main':
/in/foo.c:5:13: error: expected '=', ',', ';', 'asm' or '__attribute__' before '&' token
  int num=5,a&b=4,a|b=7
             ^
/in/foo.c:5:6: warning: unused variable 'num' [-Wunused-variable]
  int num=5,a&b=4,a|b=7
      ^~~