0_0_5354804_274.cpp 0_0_5354804_274.cpp(6) : error C2668: "sqrt" : ??????????? VC\include\math.h(626): ???"long double sqrt(long double)" VC\include\math.h(578): ? "float sqrt(float)" VC\include\math.h(200): ? "double sqrt(double)" ????????"(long)"?