Compilare: user.cpp: In function ‘bool Flux()’: user.cpp:45:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (us[to] || flux[node][to] == cap[node][to]) continue; ^ user.cpp:45:40: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (us[to] || flux[node][to] == cap[node][to]) continue; ^ user.cpp:45:57: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (us[to] || flux[node][to] == cap[node][to]) continue; ^ user.cpp:47:20: warning: array subscript has type ‘char’ [-Wchar-subscripts] prov[to] = node; ^ user.cpp:48:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] us[to] = true; ^ user.cpp:56:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (!us[from]) continue; ^ user.cpp:62:46: warning: array subscript has type ‘char’ [-Wchar-subscripts] flow = min(flow, cap[ prov[node] ][node] - flux[ prov[node] ][node] ); ^ user.cpp:62:73: warning: array subscript has type ‘char’ [-Wchar-subscripts] flow = min(flow, cap[ prov[node] ][node] - flux[ prov[node] ][node] ); ^ user.cpp:64:30: warning: array subscript has type ‘char’ [-Wchar-subscripts] flux[ prov[node] ][node] += flow; ^ user.cpp:65:36: warning: array subscript has type ‘char’ [-Wchar-subscripts] flux[node][ prov[node] ] -= flow; ^ user.cpp: In function ‘int main()’: user.cpp:76:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("joc4.in","r",stdin); ^ user.cpp:77:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("joc4.out","w",stdout); ^ user.cpp:79:38: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d", &n, &m, &S, &D); ^ user.cpp:81:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &x, &y); ^