Compilare: user.cpp: In function ‘void ver()’: user.cpp:18:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<v[w[i]].size();j++) ^ user.cpp: In function ‘void citire()’: user.cpp:31:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<v[x].size();j++)if(v[x][j]==y){ok=false;break;} ^