程序运行结果为:class Sample{ int n;public: Sample(int i){n=i;} friend int add(Sample &s1,Sample &s2);};int add(Sample &s1,Sample &s2){return s1.n+s2.n;}void main(){Sample s1(1),s2(2);cout< 程序 运行 结果 发布时间:2024-04-11 11:20:14