求高手帮忙，主函数和头文件exp3_1.h在问题补充里了！

Question

#include<iostream>using namespace std;#include"exp3_1.h"int main(){Girl g("sss",20);Boy b("sll",18);g.Print();b.Print();g.VisitBoy(b);// b.VisitGirl(g);return 0;}//头文件exp3_1.h#include<iostream>#include<string>using namespace std;class Boy; //向前引用class Girl{char name[20]; //类数据成员默认私有int age;public:Girl(char N[],int A); //构造函数~Girl() //析构函数{cout<<"Girl destructing...\n";}void Print();void VisitBoy(Boy &); //在其中访问Boy类的私有成员};class Boy{char name[20];int age;friend Girl; //将Girl类作为Boy类的友元类public:Boy(char N[],int A);~Boy(){cout<<"Boy destructing...\n";}void Print();// void VisitGirl(Girl &);};//Girl类的成员函数Girl::Girl(char N[],int A) //Girl类的构造函数的实现代码{strcpy(name,N);age=A;cout<<"Girl constructing...\n";}void Girl::Print() //Girl类的输出函数实现代码{cout<<"Girl's name: "<<name<<endl;cout<<"Girl's age: "<<age<<endl;}void Girl::VisitBoy(Boy &boy) //通过Girl类中的VisitBoy函数访问Boy类中的数据成员{cout<<"Boy's name: "<<boy.name<<endl;cout<<"Boy's age: "<<boy.age<<endl;}//Boy类的成员函数Boy::Boy(char N[],int A){strcpy(name,N);age=A;cout<<"Boy constructing...\n";}void Boy::Print(){cout<<"Boy's name: "<<name<<endl;cout<<"Boy's age: "<<age<<endl;}/*Boy::VisitGirl(Girl &girl){cout<<"Girl's name: "<<girl.name<<endl;cout<<"Girl's age: "<<girl.age<<endl;}*/

Answer 1

Girl constructing...
Boy constructing...
Girl's name: sss
Girl's age: 20
Boy's name: sll
Boy's age: 18
Boy's name: sll
Boy's age: 18
Boy destructing...
Girl destructing...
Press any key to continue
***************************************
以上是输出结果 是不是你所建的不对啊
完全没有错误啊 //头文件exp3_1.h 下面的代码 放于你所建c/c++ Header file 中 然后主函数文件放于你建的source file 中,cpp 文件