Compilare: user.cpp: In function ‘int main()’: user.cpp:11:16: warning: left operand of comma operator has no effect [-Wunused-value] if ((B-A)%X==0,B>A || (A-B)%X==0,A>B ) cout<<X; ^ user.cpp:11:24: warning: right operand of comma operator has no effect [-Wunused-value] if ((B-A)%X==0,B>A || (A-B)%X==0,A>B ) cout<<X; ^