Compilare: user.cpp: In function ‘void Dijkstra(int)’: user.cpp:68:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0;i < G[node].size();++i) ^ user.cpp: In function ‘void DFS(int, int, int)’: user.cpp:92:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0;i < G[x].size();++i) ^ user.cpp: In function ‘void citeste(int&)’: user.cpp:25:36: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buff, 1, DIM, in), poz = 0; ^ user.cpp:31:36: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buff, 1, DIM, in), poz = 0; ^ user.cpp: In function ‘int main()’: user.cpp:108:34: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buff, 1, DIM, in), poz = 0; ^