Compilare: user.cpp: In function ‘int main()’: user.cpp:11:12: warning: unused variable ‘m’ [-Wunused-variable] int n, m, a, i, b, x, y; ^ user.cpp:11:21: warning: unused variable ‘b’ [-Wunused-variable] int n, m, a, i, b, x, y; ^ user.cpp:11:24: warning: unused variable ‘x’ [-Wunused-variable] int n, m, a, i, b, x, y; ^ user.cpp:11:27: warning: unused variable ‘y’ [-Wunused-variable] int n, m, a, i, b, x, y; ^