A sentimental robot

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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 #include #include using namespace std; class A { int a; public:A(int num = 0) :a(num) { } friend ostream& operator (istream &in, A&aa); }; ostream& operator