Compilare: user.cpp: In function ‘int main()’: user.cpp:35:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (i!=sir.size()){ ^ user.cpp:48:7: warning: unused variable ‘k’ [-Wunused-variable] int k = 0; ^ user.cpp: In function ‘int poz(int, int)’: user.cpp:25:1: warning: control reaches end of non-void function [-Wreturn-type] } ^