Compilare: user.cpp: In function ‘int main()’: user.cpp:8:20: warning: unused variable ‘s’ [-Wunused-variable] unsigned int n,s=0,i=0,m,j; ^ user.cpp:8:24: warning: unused variable ‘i’ [-Wunused-variable] unsigned int n,s=0,i=0,m,j; ^ user.cpp:8:30: warning: unused variable ‘j’ [-Wunused-variable] unsigned int n,s=0,i=0,m,j; ^