Compilare: main.cpp: In constructor 'graphTopologicalSort::graphTopologicalSort()': main.cpp:15:16: warning: 'graphTopologicalSort::dc' will be initialized after [-Wreorder] uint *di, *dc, n; ^~ main.cpp:13:10: warning: 'bool graphTopologicalSort::created' [-Wreorder] bool created; ^~~~~~~ main.cpp:17:5: warning: when initialized here [-Wreorder] graphTopologicalSort(): g(nullptr), di(nullptr), dc(nullptr), created(false){} ^~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:83:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("sortaret.in","r",stdin); ^ main.cpp:84:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("sortaret.out","w",stdout); ^ main.cpp:85:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d",&n,&m); ^ main.cpp:90:29: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d",&x,&y); ^