Compilare: user.cpp: In function ‘int main()’: user.cpp:8:9: warning: unused variable ‘a’ [-Wunused-variable] int a,b,ma,mi,cpp,cp,cnt=0,op=0; ^ user.cpp:8:11: warning: unused variable ‘b’ [-Wunused-variable] int a,b,ma,mi,cpp,cp,cnt=0,op=0; ^ user.cpp:8:26: warning: unused variable ‘cnt’ [-Wunused-variable] int a,b,ma,mi,cpp,cp,cnt=0,op=0; ^