Compilare: user.cpp: In function ‘int main()’: user.cpp:48:15: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(oks[i] == 0) ^ user.cpp:17:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d%d", &n, &k); ^ user.cpp:19:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%c", &c); ^ user.cpp:20:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%s", s); ^