Compilare: user.cpp: In function ‘int main()’: user.cpp:21:16: warning: left operand of comma operator has no effect [-Wunused-value] {for (i=0 ; i<=5, j<=n+1; ++i, j++) ^ user.cpp:35:9: warning: unused variable ‘prim’ [-Wunused-variable] int prim=1,ultim=1; ^ user.cpp:35:16: warning: unused variable ‘ultim’ [-Wunused-variable] int prim=1,ultim=1; ^