Compilare: user.cpp: In function ‘int main()’: user.cpp:18:16: warning: array subscript has type ‘char’ [-Wchar-subscripts] vf[v[i]] = 1; ^ user.cpp:30:25: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(max < vf[v[i]]) { ^ user.cpp:31:26: warning: array subscript has type ‘char’ [-Wchar-subscripts] max = vf[v[i]]; ^ user.cpp:34:24: warning: array subscript has type ‘char’ [-Wchar-subscripts] else if(vf[v[i]] == max) { ^ user.cpp:37:32: warning: array subscript has type ‘char’ [-Wchar-subscripts] j = i + P + 1 + vf[v[i]]; ^ user.cpp:38:32: warning: array subscript has type ‘char’ [-Wchar-subscripts] m = i + P + 1 - vf[v[i]]; ^ user.cpp:12:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("char.in","r",stdin); ^ user.cpp:13:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("char.out","w",stdout); ^ user.cpp:14:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d ", &n); ^ user.cpp:16:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%c",&ch); ^ user.cpp:20:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &k); ^ user.cpp:25:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &nr); ^