Compilare: user.cpp: In function ‘void citire()’: user.cpp:13:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1;i<=m;i++) ^ user.cpp: In function ‘void declarare_x()’: user.cpp:23:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<=n;i++) ^ user.cpp: In function ‘int nod_nevizitat()’: user.cpp:29:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1;i<=n;i++) ^ user.cpp: In function ‘void adancime(int)’: user.cpp:38:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[pl].size();i++) ^