Eroare de compilare: user.cpp: In function ‘int stoi(std::string)’: user.cpp:10:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i <= x.size() - 1; ++i) ^ user.cpp: In function ‘int main()’: user.cpp:26:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i <= recipe.size() - 1; ++i) { ^ user.cpp:34:99: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (recipe[x] != ' ' and recipe[x] != '(' and recipe[x] != ')' and x < recipe.size()) { ^ user.cpp:40:35: error: call of overloaded ‘stoi(std::string&)’ is ambiguous result += stoi(now); ^ user.cpp:40:35: note: candidates are: user.cpp:8:5: note: int stoi(std::string) int stoi(string x) { ^ In file included from /usr/include/c++/4.8/string:52:0, from /usr/include/c++/4.8/bits/locale_classes.h:40, from /usr/include/c++/4.8/bits/ios_base.h:41, from /usr/include/c++/4.8/ios:42, from /usr/include/c++/4.8/istream:38, from /usr/include/c++/4.8/fstream:38, from user.cpp:1: /usr/include/c++/4.8/bits/basic_string.h:2823:3: note: int std::stoi(const string&, std::size_t*, int) stoi(const string& __str, size_t* __idx = 0, int __base = 10) ^ user.cpp:46:47: error: call of overloaded ‘stoi(std::string&)’ is ambiguous v[j].value += stoi(now); ^ user.cpp:46:47: note: candidates are: user.cpp:8:5: note: int stoi(std::string) int stoi(string x) { ^ In file included from /usr/include/c++/4.8/string:52:0, from /usr/include/c++/4.8/bits/locale_classes.h:40, from /usr/include/c++/4.8/bits/ios_base.h:41, from /usr/include/c++/4.8/ios:42, from /usr/include/c++/4.8/istream:38, from /usr/include/c++/4.8/fstream:38, from user.cpp:1: /usr/include/c++/4.8/bits/basic_string.h:2823:3: note: int std::stoi(const string&, std::size_t*, int) stoi(const string& __str, size_t* __idx = 0, int __base = 10) ^ user.cpp:51:50: error: call of overloaded ‘stoi(std::string&)’ is ambiguous v[numbering].value = stoi(now); ^ user.cpp:51:50: note: candidates are: user.cpp:8:5: note: int stoi(std::string)