Compilare: user.cpp: In function ‘void divide(char*, int)’: user.cpp:22:23: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(s[0] && !s[s[0]]) ^ user.cpp: In function ‘int main()’: user.cpp:61:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(b[b[0]] != 0) ^ user.cpp:63:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(a[a[0]] != 0) ^ user.cpp:43:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("easylca.in", "r", stdin); ^ user.cpp:44:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("easylca.out", "w", stdout); ^ user.cpp:45:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &Q); ^ user.cpp:47:37: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s %s\n", (x + 1), (y + 1)); ^