Compilare: user.cpp: In function ‘int main()’: user.cpp:58:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i<V[v].size()&&VIZ[V[v][i]]) ^ user.cpp:60:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i==V[v].size()) ^ user.cpp: In function ‘void citeste(int&)’: user.cpp:22:42: 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,fi),poz=0; ^ user.cpp:28:42: 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,fi),poz=0; ^