Compilare: user.cpp: In function ‘int main()’: user.cpp:30:31: warning: unused variable ‘j’ [-Wunused-variable] unsigned long long n,nr,i,j,m,a=0,b=0,v[20],max=0,c,d,x,nrc1=0,nrc2=0,x1,c1; ^ user.cpp:30:43: warning: unused variable ‘v’ [-Wunused-variable] unsigned long long n,nr,i,j,m,a=0,b=0,v[20],max=0,c,d,x,nrc1=0,nrc2=0,x1,c1; ^