Compilare: user.cpp: In function ‘int main()’: user.cpp:17:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<=fact.size(); i++) ^ user.cpp:23:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<=fact.size()+1; i++) ^ user.cpp:26:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<=fact.size()+1; i++) ^