题目内容
写程序运行结果#include class B;class A{int data;A *prev;public:A(int d,A *n){data=d;prev=n;}friend class B;};class B{A *top;public:B(){top=0;}void push(int i){A *n=new A(i,top);top=n;}int pop(){A *t=top;if(top){top=top->prev;int c=t->data;delete t;return c;}return 0;}};void main(){int c[10]={23,34,56,87,67,876,42,657,55,66};B s;for(int i=0; i<10;i++)s.push(c[i]);for(i=0; i<10; i++)cout<
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