Compilare: main.cpp: In function 'int main()': main.cpp:46:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(cx!=0 && cx<v[c].size() && v[c][cx]==x) { ~~^~~~~~~~~~~~ main.cpp: In function 'int dreapta(int, int)': main.cpp:72:42: warning: variable 'poz' set but not used [-Wunused-but-set-variable] int st=0, dr=v[cul].size()-1, mij=0, poz=-1; ^~~ main.cpp:80:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^