Compilare: main.cpp: In function 'int main()': main.cpp:14:25: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d",&n); ^ main.cpp:16:29: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d",&x); ^ main.cpp:63:5: warning: 'prm' may be used uninitialized in this function [-Wmaybe-uninitialized] if (v[ant]!=prm){ ^~