Compilare: user.cpp: In function ‘int main()’: user.cpp:18:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(vf[s[j]] == 0) { ^ user.cpp:21:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] ++vf[s[j++]]; ^ user.cpp:30:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(vf[s[i]] == 1) { ^ user.cpp:33:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] --vf[s[i++]]; ^ user.cpp:10:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("teatru.in", "r", stdin); ^ user.cpp:11:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("teatru.out", "w", stdout); ^ user.cpp:12:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d\n", &z, &c); ^ user.cpp:13:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s", s); ^