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2_30942_2457144_22229.cpp 2_30942_2457144_22229.cpp(18) : error C2668: “fabs”: 对重载函数的调用不明确 2013\INCLUDE\math.h(1181): 可能是“long double fabs(long double) throw()” 2013\INCLUDE\math.h(1065): 或 “float fabs(float) throw()” 2013\INCLUDE\math.h(491): 或 “double fabs(double)” 尝试匹配参数列表“(__int64)”时