Compilare: user.cpp: In function ‘int main()’: user.cpp:9:9: warning: unused variable ‘a’ [-Wunused-variable] int a,b,q,ni,nz,v[2001],vz[2001],ok=0,i,j; ^ user.cpp:9:11: warning: unused variable ‘b’ [-Wunused-variable] int a,b,q,ni,nz,v[2001],vz[2001],ok=0,i,j; ^ user.cpp:9:13: warning: unused variable ‘q’ [-Wunused-variable] int a,b,q,ni,nz,v[2001],vz[2001],ok=0,i,j; ^ user.cpp:9:38: warning: variable ‘ok’ set but not used [-Wunused-but-set-variable] int a,b,q,ni,nz,v[2001],vz[2001],ok=0,i,j; ^