Compilare: main.cpp: In function 'int main()': main.cpp:11:25: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d",&n); ^ main.cpp:13:29: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d",&x); ^ main.cpp:29:17: warning: iteration 999999 invokes undefined behavior [-Waggressive-loop-optimizations] if (!v[i]) ~~~^ main.cpp:28:15: note: within this loop for (i=1;i<=VALMAX;i++){ ^ main.cpp:17:17: warning: iteration 999998 invokes undefined behavior [-Waggressive-loop-optimizations] if (!v[i]){ ~~~^ main.cpp:16:15: note: within this loop for (i=2;i<=VALMAX;i++){ ^