Compilare: main.cpp: In function 'int main()': main.cpp:158:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 1; j < i; ++j) ~~^~~ main.cpp:37:28: warning: unused variable 'j' [-Wunused-variable] unsigned long long n,i,j,ver,kon=0,c,cn,nrc=0,po=1,s=0; ^ main.cpp:37:34: warning: unused variable 'kon' [-Wunused-variable] unsigned long long n,i,j,ver,kon=0,c,cn,nrc=0,po=1,s=0; ^~~ main.cpp:37:42: warning: variable 'cn' set but not used [-Wunused-but-set-variable] unsigned long long n,i,j,ver,kon=0,c,cn,nrc=0,po=1,s=0; ^~ main.cpp: In function 'int conversion(long long int)': main.cpp:30:10: warning: 'ind' may be used uninitialized in this function [-Wmaybe-uninitialized] s=s+ind; ~^~~~~~