Compilare: user.cpp: In function ‘int main()’: user.cpp:23:24: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘char (*)[60005]’ [-Wformat=] scanf("%s\n",&s); ^ user.cpp:38:29: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (val[s[i]]<0) ^ user.cpp:39:38: warning: array subscript has type ‘char’ [-Wchar-subscripts] st.push(-val[s[i]]); ^ user.cpp:41:54: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (st.size()&&st.top()==val[s[i]]) ^ user.cpp:14:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("editor.in","r",stdin); ^ user.cpp:15:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("editor.out","w",stdout); ^ user.cpp:18:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for (scanf("%d",&t);t;t--) { ^ user.cpp:23:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s\n",&s); ^