Compilare: user.cpp: In function ‘int main()’: user.cpp:9:13: warning: variable ‘x’ set but not used [-Wunused-but-set-variable] int a,b,x,y,cmmmc; ^ user.cpp:9:15: warning: variable ‘y’ set but not used [-Wunused-but-set-variable] int a,b,x,y,cmmmc; ^ user.cpp:9:17: warning: unused variable ‘cmmmc’ [-Wunused-variable] int a,b,x,y,cmmmc; ^