Compilare: user.cpp: In function ‘int combinari(int, int)’: user.cpp:58:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:80:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i<strlen(sir)) ^ user.cpp:93:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v.size()-1;i++) ^ user.cpp:95:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=i+1;j<v.size();j++) ^