Compilare: user.cpp: In function ‘int coborare(int, int)’: user.cpp:76:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘void Dijkstra(int, int)’: user.cpp:103:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<G[nod].size();i++) ^ user.cpp: In function ‘char nextch()’: user.cpp:13:31: 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); ^ user.cpp: In function ‘int main()’: user.cpp:162:21: warning: ‘nod’ may be used uninitialized in this function [-Wmaybe-uninitialized] get_size(nod,C,2); ^