Eroare de compilare: user.cpp: In function ‘void sum(std::string)’: user.cpp:12:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 32; i >= 32 - num.size() + 1; i--) ^ user.cpp: In function ‘int main()’: user.cpp:38:30: error: expected ‘)’ before ‘;’ token sum(to_string(base10to2(x)); ^ user.cpp:45:6: error: redeclaration of ‘int x’ int x=0,p=1; ^ user.cpp:34:6: error: ‘int x’ previously declared here int x; ^