totally confused

[mgsweet]

bitset那题，为什么xcode完全编译不了，之前也出现过类似的状况，忘了是打vector还是matrix,好像和它本身定义的东西有冲突，放上eden完美编译

求ta赐教

[ghostbody]

I do not have apple laptop and I do not know what the xcode happen. I used clang++ in linux to compile the standard answer code and no error reported. Please make sure you are using the correct template argument in declaration.

[DaddyTrap]

@mgsweet I think it is

using namespace std;

that results in this problem.

There is a class named bitset in C++'s standard library. Though you haven't included that library, your IDE may do that I think.

When using using namespace std; , just replace it by using std::cout; or etc. Maybe it helps, maybe it doesn't........Please try it yourself and hope it works.

[mgsweet]

@DaddyTrap @ghostbody Thank you very much, i will try it later 👍

[ghostbody]

@DaddyTrap @mgsweet Well, using namespace std is a dangerous statement. Do not add a whole namespace into current context, you never know what's inside std.

[mgsweet]

@ghostbody @DaddyTrap Thanks you very much. It is the 'using namespace' in main.h that cause the problem. I change it with using std::cout; using std::can; And it works. Obviously, @DaddyTrap you are right.