Compilare: user.cpp: In function ‘int main()’: user.cpp:72:12: warning: unused variable ‘x’ [-Wunused-variable] int T, x, y; ^ user.cpp:72:15: warning: unused variable ‘y’ [-Wunused-variable] int T, x, y; ^ user.cpp: In function ‘void MakeGraph()’: user.cpp:57:37: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf ( f, "%d%d", &x, &y ); ^ user.cpp: In function ‘int main()’: user.cpp:74:27: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf ( f, "%d", &T ); ^ user.cpp:77:37: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf ( f, "%d%d", &N, &M ); ^ user.cpp: In function ‘int BFS(int)’: user.cpp:48:12: warning: ‘nod’ may be used uninitialized in this function [-Wmaybe-uninitialized] return nod; ^