Compilare: user.cpp: In function ‘int main()’: user.cpp:33:33: warning: array subscript has type ‘char’ [-Wchar-subscripts] cuv[nr][++cuv[nr][0]]=ch; ^ user.cpp:41:45: warning: array subscript has type ‘char’ [-Wchar-subscripts] st=cuv[i][1]-'`',dr=cuv[i][cuv[i][0]]-'`'; ^ user.cpp:24:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("text3.in","r",stdin); ^ user.cpp:25:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("text3.out","w",stdout); ^