Compilare: user.cpp: In function ‘bool solve_word()’: user.cpp:87:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<G[pos].size();++i)//G[pos][i] pozitia in stringul mare unde incepe secventa ^ user.cpp:97:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<G[pos].size();++j)//G[pos][i] pozitia in stringul mare unde incepe secventa ^ user.cpp:102:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ /tmp/cce8ToSk.o: In function `main': user.cpp:(.text.startup+0x77): warning: the `gets' function is dangerous and should not be used.