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View Compilation Error

0_0_6732064_4931.cpp
0_0_6732064_4931.cpp(54) : error C2065: “cost” : 未声明的标识符
0_0_6732064_4931.cpp(54) : error C2070: “'unknown-type'”: 非法的 sizeof 操作数
0_0_6732064_4931.cpp(54) : error C3861: “cost”: 即使使用参数相关的查找,也未找到标识符
0_0_6732064_4931.cpp(94) : error C2668: “sqrt” : 对重载函数的调用不明确
        VC\include\math.h(626): 可能是“long double sqrt(long double)”
        VC\include\math.h(578): 或       “float sqrt(float)”
        VC\include\math.h(200): 或       “double sqrt(double)”
        试图匹配参数列表“(int)”时


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