Compilare: user.cpp: In function ‘int DFS(int, int)’: user.cpp:37:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v[nod].size();i++) ^ user.cpp: In function ‘void create(int)’: user.cpp:46:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<w[nod].size();i++) ^ user.cpp: In function ‘void citeste(int&)’: user.cpp:19:45: 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,stdin),poz=0; ^ user.cpp:25:45: 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,stdin),poz=0; ^ user.cpp: In function ‘int DFS(int, int)’: user.cpp:42:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:55:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("arbore.in","r",stdin); ^ user.cpp:56:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("arbore.out","w",stdout); ^