Eroare de compilare: user.cpp: In function ‘int fractii(int)’: user.cpp:33:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j2=0;j2<v.size()-1;j2++) ^ user.cpp:35:47: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j3=j2+1;j3<v.size();j3++) ^ user.cpp:22:9: warning: unused variable ‘p’ [-Wunused-variable] int p,j,i,w1,s=0,w=0; ^ user.cpp: At global scope: user.cpp:46:6: warning: ISO C++ forbids declaration of ‘main’ with no type [-Wreturn-type] main() ^ user.cpp: In function ‘int main()’: user.cpp:49:5: error: reference to ‘cin’ is ambiguous cin>>n; ^ user.cpp:7:10: note: candidates are: std::ifstream cin ifstream cin("fractii.in"); ^ In file included from user.cpp:2:0: /usr/include/c++/4.8/iostream:60:18: note: std::istream std::cin extern istream cin; /// Linked to standard input ^ user.cpp:50:5: error: reference to ‘cout’ is ambiguous cout<<fractii(n); ^ user.cpp:8:10: note: candidates are: std::ofstream cout ofstream cout("fractii.out"); ^ In file included from user.cpp:2:0: /usr/include/c++/4.8/iostream:61:18: note: std::ostream std::cout extern ostream cout; /// Linked to standard output ^