Compilare: user.cpp: In function ‘int main()’: user.cpp:7:10: warning: variable ‘yoh’ set but not used [-Wunused-but-set-variable] bool yoh; ^ user.cpp:9:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%i %i",&a,&b); fclose(f); ^ user.cpp:27:25: warning: ‘xi’ may be used uninitialized in this function [-Wmaybe-uninitialized] while(xi%p[y]==0) ^