reteta.cpp:9: `std::istringstream sin' redeclared as different kind of symbol /usr/include/bits/mathcalls.h:66: previous declaration of `double sin(double)' reteta.cpp: In function `int main()': reteta.cpp:20: warning: comparison between signed and unsigned integer expressions reteta.cpp:41: warning: comparison between signed and unsigned integer expressions reteta.cpp:42: warning: comparison between signed and unsigned integer expressions reteta.cpp:45: use of `sin' is ambiguous reteta.cpp:9: first declared as `std::istringstream sin' here /usr/include/c++/3.2.2/cmath:437: also declared as `std::sin' here reteta.cpp:50: use of `sin' is ambiguous reteta.cpp:9: first declared as `std::istringstream sin' here /usr/include/c++/3.2.2/cmath:437: also declared as `std::sin' here reteta.cpp:52: use of `sin' is ambiguous reteta.cpp:9: first declared as `std::istringstream sin' here /usr/include/c++/3.2.2/cmath:437: also declared as `std::sin' here reteta.cpp:53: use of `sin' is ambiguous reteta.cpp:9: first declared as `std::istringstream sin' here /usr/include/c++/3.2.2/cmath:437: also declared as `std::sin' here