Compilare: user.cpp: In function ‘int main()’: user.cpp:10:12: warning: unused variable ‘plut’ [-Wunused-variable] int n, plut=0, i, j, p=0, a=0, b=0, k, l; ^ user.cpp:10:31: warning: unused variable ‘a’ [-Wunused-variable] int n, plut=0, i, j, p=0, a=0, b=0, k, l; ^ user.cpp:10:36: warning: unused variable ‘b’ [-Wunused-variable] int n, plut=0, i, j, p=0, a=0, b=0, k, l; ^ user.cpp:10:41: warning: unused variable ‘k’ [-Wunused-variable] int n, plut=0, i, j, p=0, a=0, b=0, k, l; ^ user.cpp:10:44: warning: unused variable ‘l’ [-Wunused-variable] int n, plut=0, i, j, p=0, a=0, b=0, k, l; ^