Compilare: user.cpp: In function ‘int distr(char*)’: user.cpp:35:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<strlen(s); i++) ^ user.cpp: In function ‘int cost(char*, int&, int&)’: user.cpp:42:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<strlen(s); i++) ^ user.cpp:50:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘void BFS(int)’: user.cpp:87:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<G[nc].size(); i++) ^ user.cpp: In function ‘int main()’: user.cpp:137:16: warning: variable ‘pp’ set but not used [-Wunused-but-set-variable] int l, pp, maux; ^ user.cpp: In function ‘bool compar(muchie, muchie)’: user.cpp:55:1: warning: control reaches end of non-void function [-Wreturn-type] } ^