这个交集函数是什么意思,s2.length是不是等同于this->length
Set Set::jiaoji(Set &s2)\n{\n Set s;\n for(int i=0;i\u003Cthis->length;i++)\n {\n s.Setnum[i]=this->Setnum[i];\n s.length= this->length;\n }\n for(int i=0;i\u003Cs2.length;i++)\n {\n s.add_num(s2.Setnum[i]);\n }\n return s;\n}