Compilare: user.cpp: In function ‘int div(unsigned int*)’: user.cpp:27:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = s; i <= A[0]; ++i) { ^ user.cpp: In function ‘int main()’: user.cpp:55:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d\n", &n); ^ user.cpp:58:23: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(S, N, f); ^