Compilare: user.cpp: In function ‘int main()’: user.cpp:10:11: warning: unused variable ‘i’ [-Wunused-variable] int n,i,j,ok,nr,sum; ^ user.cpp:10:13: warning: unused variable ‘j’ [-Wunused-variable] int n,i,j,ok,nr,sum; ^ user.cpp:10:15: warning: unused variable ‘ok’ [-Wunused-variable] int n,i,j,ok,nr,sum; ^ user.cpp:10:18: warning: unused variable ‘nr’ [-Wunused-variable] int n,i,j,ok,nr,sum; ^ user.cpp:10:21: warning: unused variable ‘sum’ [-Wunused-variable] int n,i,j,ok,nr,sum; ^