Compilare: user.cpp: In function ‘void DFS(int, int)’: user.cpp:59:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<G[nod].size();i++) ^ user.cpp: In function ‘int main()’: user.cpp:92:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<LVL[i].size();j++) ^ user.cpp:112:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(rez1+pas<LVL[lvl].size()&&val[check(LVL[lvl][rez1+pas],d+1)]<val[nod]) ^ user.cpp:114:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(rez2+pas<LVL[lvl].size()&&val[check(LVL[lvl][rez2+pas],d+1)]<=val[nod]) ^ user.cpp: In function ‘char nextch()’: user.cpp:8:31: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buf,1,MAXBUF,fi); ^