填空题 输出所有pumpkin的总重量。 #include class pumpkin{ public:    (1)    { weight=w; total_weight+= weight; } ~pumpkin 1 {    (2)    } static void total_display 2 { cout<<"Total weight is "<3{ pumpkin p1(15),p2(20),p3(12);    (4)    }
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【正确答案】 1、(1) pumpkin(int w) (2) total_weight-=weight; (3) int pumpkin::total_weight=0; (4) pumpkin::total_display ---|||________|||---;    
【答案解析】