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View Compilation Error

0_0_4837835_12986.cpp
0_0_4837835_12986.cpp(7) : error C2668: “acos” : 对重载函数的调用不明确
        VC\include\math.h(586): 可能是“long double acos(long double)”
        VC\include\math.h(538): 或       “float acos(float)”
        VC\include\math.h(183): 或       “double acos(double)”
        试图匹配参数列表“(int)”时
0_0_4837835_12986.cpp(8) : error C2668: “exp” : 对重载函数的调用不明确
        VC\include\math.h(600): 可能是“long double exp(long double)”
        VC\include\math.h(552): 或       “float exp(float)”
        VC\include\math.h(189): 或       “double exp(double)”
        试图匹配参数列表“(int)”时
0_0_4837835_12986.cpp(13) : error C3861: “abc”: 即使使用参数相关的查找,也未找到标识符
0_0_4837835_12986.cpp(19) : error C2365: “abc” : 重定义;以前的定义是“原先未知的标识符”


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