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0_0_20605203_14353.cpp
0_0_20605203_14353.cpp(5) : error C2668: “cos”: 对重载函数的调用不明确
        VC2013\INCLUDE\math.h(1167): 可能是“long double cos(long double) throw()”
        VC2013\INCLUDE\math.h(1051): 或       “float cos(float) throw()”
        VC2013\INCLUDE\math.h(484): 或       “double cos(double)”
        尝试匹配参数列表“(int)”时
0_0_20605203_14353.cpp(5) : error C2668: “sin”: 对重载函数的调用不明确
        VC2013\INCLUDE\math.h(1247): 可能是“long double sin(long double) throw()”
        VC2013\INCLUDE\math.h(1131): 或       “float sin(float) throw()”
        VC2013\INCLUDE\math.h(519): 或       “double sin(double)”
        尝试匹配参数列表“(int)”时