Compilare: user.cpp: In function ‘int main()’: user.cpp:14:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fdin, "%d%d", &n, &k); ^ user.cpp:15:56: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for (int i = 1; i <= n; i++) fscanf(fdin, "%d", &v[i]); ^