/in/foo.c: In function 'FindMaxs':
/in/foo.c:13:8: warning: unused variable 'k' [-Wunused-variable]
  int i,k;
        ^
/in/foo.c: In function 'main':
/in/foo.c:7:2: warning: 'n' is used uninitialized in this function [-Wuninitialized]
  printf("%d",FindMaxs(n));
  ^~~~~~~~~~~~~~~~~~~~~~~~