Eroare de compilare: user.cpp: In function ‘void df(int)’: user.cpp:35:34: error: call of overloaded ‘to_string(int&)’ is ambiguous dfstr = dfstr + to_string(nod); ^ user.cpp:35:34: note: candidates are: user.cpp:18:8: note: std::string to_string(int) string to_string(int Number ) ^ In file included from /usr/local/include/c++/4.8.0/string:52:0, from /usr/local/include/c++/4.8.0/bits/locale_classes.h:40, from /usr/local/include/c++/4.8.0/bits/ios_base.h:41, from /usr/local/include/c++/4.8.0/ios:42, from /usr/local/include/c++/4.8.0/ostream:38, from /usr/local/include/c++/4.8.0/iostream:39, from user.cpp:1: /usr/local/include/c++/4.8.0/bits/basic_string.h:2918:3: note: std::string std::to_string(long double) to_string(long double __val) ^ /usr/local/include/c++/4.8.0/bits/basic_string.h:2909:3: note: std::string std::to_string(double) to_string(double __val) ^ /usr/local/include/c++/4.8.0/bits/basic_string.h:2900:3: note: std::string std::to_string(float) to_string(float __val) ^ /usr/local/include/c++/4.8.0/bits/basic_string.h:2894:3: note: std::string std::to_string(long long unsigned int) to_string(unsigned long long __val) ^ /usr/local/include/c++/4.8.0/bits/basic_string.h:2888:3: note: std::string std::to_string(long long int) to_string(long long __val) ^ /usr/local/include/c++/4.8.0/bits/basic_string.h:2882:3: note: std::string std::to_string(long unsigned int) to_string(unsigned long __val) ^ /usr/local/include/c++/4.8.0/bits/basic_string.h:2877:3: note: std::string std::to_string(long int) to_string(long __val) ^ /usr/local/include/c++/4.8.0/bits/basic_string.h:2871:3: note: std::string std::to_string(unsigned int) to_string(unsigned __val) ^ /usr/local/include/c++/4.8.0/bits/basic_string.h:2866:3: note: std::string std::to_string(int) to_string(int __val) ^