Compilare: user.cpp: In function ‘int main()’: user.cpp:9:11: warning: unused variable ‘a’ [-Wunused-variable] int n,a,ma=0,ck=0,p1=0,p2=0,s=1; ^ user.cpp:9:18: warning: unused variable ‘ck’ [-Wunused-variable] int n,a,ma=0,ck=0,p1=0,p2=0,s=1; ^ user.cpp:9:28: warning: unused variable ‘p2’ [-Wunused-variable] int n,a,ma=0,ck=0,p1=0,p2=0,s=1; ^