Compilare: user.cpp: In function ‘void lee(int, int)’: user.cpp:29:23: warning: unused variable ‘j’ [-Wunused-variable] int xx,yy,st,dr,i,j; ^ user.cpp: In function ‘int main()’: user.cpp:70:7: warning: overflow in implicit constant conversion [-Woverflow] lg=9999999999; ^ user.cpp:81:12: warning: deleting array ‘a’ [enabled by default] delete a,b; ^ user.cpp:81:15: warning: right operand of comma operator has no effect [-Wunused-value] delete a,b; ^