/in/foo.c: In function 'main':
/in/foo.c:10:6: warning: unused variable 'tmp' [-Wunused-variable]
  int tmp = n, count1 = 0, i = 0, count2 = 0;
      ^~~
/in/foo.c:6:6: warning: variable 'a' set but not used [-Wunused-but-set-variable]
  int a[10];
      ^