(11) : error C2668: “sqrt”: 对重载函数的调用不明确
        VC8\include\math.h(581): 可能是“long double sqrt(long double)”
        VC8\include\math.h(533): 或“float sqrt(float)”
        VC8\include\math.h(128): 或“double sqrt(double)”
        试图匹配参数列表“(int)”时
(12) : error C2668: “log10”: 对重载函数的调用不明确
        VC8\include\math.h(569): 可能是“long double log10(long double)”
        VC8\include\math.h(521): 或“float log10(float)”
        VC8\include\math.h(122): 或“double log10(double)”
        试图匹配参数列表“(int)”时
(12) : error C2668: “log10”: 对重载函数的调用不明确
        VC8\include\math.h(569): 可能是“long double log10(long double)”
        VC8\include\math.h(521): 或“float log10(float)”
        VC8\include\math.h(122): 或“double log10(double)”
        试图匹配参数列表“(int)”时