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View Compilation Error

0_0_36492823_5628.cpp
0_0_36492823_5628.cpp(30) : error C3551: 应提供结尾返回类型
0_0_36492823_5628.cpp(30) : error C2440: “return”: 无法从“mat”转换为“int”
        没有可用于执行该转换的用户定义的转换运算符,或者无法调用该运算符
0_0_36492823_5628.cpp(32) : error C3551: 应提供结尾返回类型
0_0_36492823_5628.cpp(36) : error C2440: “return”: 无法从“mat”转换为“int”
        没有可用于执行该转换的用户定义的转换运算符,或者无法调用该运算符
0_0_36492823_5628.cpp(38) : error C3551: 应提供结尾返回类型
0_0_36492823_5628.cpp(59) : error C2679: 二进制“=”: 没有找到接受“const __int64”类型的右操作数的运算符(或没有可接受的转换)
        VC2013\INCLUDE\valarray(189): 可能是“std::valarray<vec> &std::valarray<vec>::operator =(const std::indirect_array<_Ty> &)”
        with
        [
            _Ty=vec
        ]
        VC2013\INCLUDE\valarray(186): 或       “std::valarray<vec> &std::valarray<vec>::operator =(const std::mask_array<_Ty> &)”
        with
        [
            _Ty=vec
        ]
        VC2013\INCLUDE\valarray(183): 或       “std::valarray<vec> &std::valarray<vec>::operator =(const std::gslice_array<_Ty> &)”
        with
        [
            _Ty=vec
        ]
        VC2013\INCLUDE\valarray(180): 或       “std::valarray<vec> &std::valarray<vec>::operator =(const std::slice_array<_Ty> &)”
        with
        [
            _Ty=vec
        ]
        VC2013\INCLUDE\valarray(163): 或       “std::valarray<vec> &std::valarray<vec>::operator =(const _Ty &)”
        with
        [
            _Ty=vec
        ]
        VC2013\INCLUDE\valarray(156): 或       “std::valarray<vec> &std::valarray<vec>::operator =(const std::valarray<vec> &)”
        VC2013\INCLUDE\valarray(136): 或       “std::valarray<vec> &std::valarray<vec>::operator =(std::initializer_list<_Ty>)”
        with
        [
            _Ty=vec
        ]
        VC2013\INCLUDE\valarray(113): 或       “std::valarray<vec> &std::valarray<vec>::operator =(std::valarray<vec> &&) throw()”
        尝试匹配参数列表“(mat, const __int64)”时
0_0_36492823_5628.cpp(60) : error C2440: “初始化”: 无法从“int”转换为“std::valarray<vec>”
        class“std::valarray<vec>”的构造函数声明为“explicit”


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