There is absolutely no gauarantee that "#include <iostream>" or simply
nothing will get you printf/scanf. Only "#include <cstdio>" will. So it is
with memcpy/memset, do "#include <cstring>", not nothing, not "<memory.h>",
not "<mem.h>", not anything else.

I don't know where on earth did you come up with the idea of using a function
from the standard library with including a proper header. Even if that works
for now, it can fail in the future. Don't do that.

• 多谢styc大牛！！！~以前一直这样用都没错~~现在终于明白了！！ (0) new_begin 2009-05-09 02:46:30