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#include <iostream> using namespace std; class Adder{ public: // 构造函数 Adder(int i = 0) { total = i; } // 对外的接口 void addNum(int number) { total += number; } // 对外的接口 int getTotal() { return total; }; private: // 对外隐藏的数据 int total; }; int main( ) { Adder a; a.addNum(10); a.addNum(20); a.addNum(30); cout << "Total " << a.getTotal() <<endl; return 0; }
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