Compilare: user.cpp: In function ‘void dfs(nod*&)’: user.cpp:44:34: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (q->urm[aux[k]] == 0) break; ^ user.cpp:45:34: warning: array subscript has type ‘char’ [-Wchar-subscripts] q = q->urm[aux[k]]; ^ user.cpp: In function ‘int main()’: user.cpp:98:43: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (q->urm[sir[l1 + i + 1]] == 0) q->urm[sir[l1 + i + 1]] = new nod; ^ user.cpp:98:73: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (q->urm[sir[l1 + i + 1]] == 0) q->urm[sir[l1 + i + 1]] = new nod; ^ user.cpp:99:43: warning: array subscript has type ‘char’ [-Wchar-subscripts] q = q->urm[sir[l1 + i + 1]]; ^ user.cpp:129:39: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (q2->urm[sir[i + 1]] == 0) q2->urm[sir[i + 1]] = new nod; ^ user.cpp:129:65: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (q2->urm[sir[i + 1]] == 0) q2->urm[sir[i + 1]] = new nod; ^ user.cpp:130:40: warning: array subscript has type ‘char’ [-Wchar-subscripts] q2 = q2->urm[sir[i + 1]]; ^ user.cpp:156:34: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (q->urm[aux[k]] == 0) break; ^ user.cpp:157:34: warning: array subscript has type ‘char’ [-Wchar-subscripts] q = q->urm[aux[k]]; ^ user.cpp:67:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("palsubsecv.in", "r", stdin); ^ user.cpp:68:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("palsubsecv.out", "w", stdout); ^ user.cpp:70:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d", &T); ^ user.cpp:73:38: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d %d %d\n", &N, &Re, &B); ^ user.cpp:74:19: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] gets (sir + 1); ^ user.cpp:78:48: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d %d %d", &a[i], &b[i], &c[i]); ^