Compilare: user.cpp: In function ‘int main()’: user.cpp:11:11: warning: unused variable ‘j’ [-Wunused-variable] { int i,j,n,k=1,x,t,s=0,cn,ct=1,d; ^ user.cpp:11:15: warning: unused variable ‘k’ [-Wunused-variable] { int i,j,n,k=1,x,t,s=0,cn,ct=1,d; ^ user.cpp:11:19: warning: unused variable ‘x’ [-Wunused-variable] { int i,j,n,k=1,x,t,s=0,cn,ct=1,d; ^ user.cpp:11:23: warning: unused variable ‘s’ [-Wunused-variable] { int i,j,n,k=1,x,t,s=0,cn,ct=1,d; ^ user.cpp:11:27: warning: variable ‘cn’ set but not used [-Wunused-but-set-variable] { int i,j,n,k=1,x,t,s=0,cn,ct=1,d; ^