Eroare de compilare: user.cpp:12: error: 'std::string exp2' redeclared as different kind of symbol /usr/include/bits/mathcalls.h:142: error: previous declaration of 'double exp2(double)' user.cpp: In function 'void eval()': user.cpp:79: error: conversion from 'double (*)(double)throw ()' to non-scalar type 'std::string' requested user.cpp: In function 'int main()': user.cpp:96: error: invalid conversion from 'void*' to 'char**' user.cpp:96: error: cannot convert 'double (*)(double)throw ()' to 'size_t*' for argument '2' to '__ssize_t getline(char**, size_t*, FILE*)'