Compilare: user.cpp: In function ‘int main()’: user.cpp:18:36: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if (cat == 0 || cat%2 == 0 && mod == 0) { ^ user.cpp:13:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &t); ^ user.cpp:16:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &n, &k); ^