Compilare: user.cpp: In function ‘int main()’: user.cpp:17:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d\n", &n); ^ user.cpp:20:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d ", &el); ^ user.cpp:27:30: warning: ‘poz’ may be used uninitialized in this function [-Wmaybe-uninitialized] inc=poz+1; sf=i; ^