/in/foo.c: In function 'main':
/in/foo.c:5:10: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'c'
  int a,b c
          ^
/in/foo.c:6:8: warning: missing terminating " character
  scanf("%d%d,&a,&b)
        ^
/in/foo.c:6:8: error: missing terminating " character
  scanf("%d%d,&a,&b)
        ^~~~~~~~~~~~
/in/foo.c:5:6: warning: unused variable 'a' [-Wunused-variable]
  int a,b c
      ^