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View Compilation Error

0_0_39391374_25599.cpp
VC2013\INCLUDE\xmemory0(588) : error C2512: “Course”: 没有合适的默认构造函数可用
        VC2013\INCLUDE\xmemory0(587): 编译类 模板 成员函数“void std::allocator<_Ty>::construct(_Ty *)”时
        with
        [
            _Ty=Course
        ]
        VC2013\INCLUDE\xmemory0(723): 参见对正在编译的函数 模板 实例化“void std::allocator<_Ty>::construct(_Ty *)”的引用
        with
        [
            _Ty=Course
        ]
        VC2013\INCLUDE\type_traits(572): 参见对正在编译的类 模板 实例化“std::allocator<_Ty>”的引用
        with
        [
            _Ty=Course
        ]
        VC2013\INCLUDE\vector(650): 参见对正在编译的类 模板 实例化“std::is_empty<_Alloc>”的引用
        with
        [
            _Alloc=std::allocator<Course>
        ]
        0_0_39391374_25599.cpp(16): 参见对正在编译的类 模板 实例化“std::vector<Course,std::allocator<_Ty>>”的引用
        with
        [
            _Ty=Course
        ]


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