题目内容

程序的输出结果是【 】。
include <iostream>
using namespace std;
class A{
public:
A(){a=b=2;}
A(int i,int j){a=i;b=j;}
void display(){cout<<a<<b;}
private:
int a,b;
};
void main(){
A m,n(4,8);
m.display();
n.display();
}

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