Compilare: user.cpp: In function ‘int main()’: user.cpp:27:24: warning: unused variable ‘d’ [-Wunused-variable] int a,b,nrdivmax=0,d,cnt,i,imin,prim,nrmax=44800; ^ user.cpp:28:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("maxd.in","r",stdin); ^ user.cpp:29:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("maxd.out","w",stdout); ^ user.cpp:30:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&a,&b); ^ user.cpp: In function ‘int nrdiv(int)’: user.cpp:7:5: warning: ‘np’ is used uninitialized in this function [-Wuninitialized] while(i<=np&&v[i]*v[i]<=n) ^ user.cpp: In function ‘int main()’: user.cpp:32:12: warning: array subscript is above array bounds [-Warray-bounds] v[nrmax]=1; ^