Compilare: user.cpp: In function ‘int main()’: user.cpp:20:25: warning: array subscript has type ‘char’ [-Wchar-subscripts] strcpy(a[n++],p); ^ user.cpp:22:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<strlen(p);i++) ^ user.cpp:12:34: 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:13:36: 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); ^