Compilare: user.cpp: In function ‘void delete_st(int)’: user.cpp:32:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j<v[i].size();) ^ user.cpp: In function ‘void out(int, int)’: user.cpp:80:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i< v[XD].size(); i++) ^ user.cpp: In function ‘void verif1(int, int, int, int, int, int)’: user.cpp:100:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i< v[X].size(); i++) ^ user.cpp:115:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i< v[XD].size(); i++) ^ user.cpp: In function ‘void verif2(int, int, int, int, int, int)’: user.cpp:138:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i< v[X].size(); i++) ^ user.cpp:153:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i< v[XD].size(); i++) ^ user.cpp: In function ‘int main()’: user.cpp:235:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i< v[X].size(); i++) ^