Compilare: main.cpp: In function 'int main()': main.cpp:8:13: warning: unused variable 'rad' [-Wunused-variable] int a,b,nrd,rad,i,maxd=0,maxnr,ult=1; ^~~ main.cpp:6:33: 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); ^ main.cpp:7:35: 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); ^ main.cpp:27:33: warning: 'maxnr' may be used uninitialized in this function [-Wmaybe-uninitialized] cout<<ult<<" "<<maxd<<" "<<maxnr; ^