Compilare: user.cpp: In function ‘int main()’: user.cpp:44:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] sol[predp[q]] = 1; ^ user.cpp:45:29: warning: array subscript has type ‘char’ [-Wchar-subscripts] q = q - mod[predp[q]]; ^ user.cpp:14:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("multiplu.in", "r", stdin); ^ user.cpp:15:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("multiplu.out", "w", stdout); ^ user.cpp:16:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &a, &b); ^