C++重载">>"的小问题

答案:1 悬赏:80 手机版

解决时间 2021-08-23 17:27

提问者网友：战皆罪
2021-08-23 09:20

#include<iostream.h>
#include<iomanip.h>
class person
{
int a,b,c;
public:
  person(int x=1,int y=2,int z=3):a(x),b(y),c(z){};
  friend ostream & operator << (ostream &s,person p);
  friend istream & operator >> (istream &s,person p);
};
ostream & operator <<(ostream &s,person p)
{
cout<<p.a<<endl<<p.b<<endl<<p.c<<endl;
return s;
}
istream & operator >>(istream &s,person p)
{
cin>>p.a>>p.b>>p.c;
return s;
}
int main()
{
person p;
cin>>p;
cout<<p;
return 0;
}

最佳答案

五星知识达人网友：怀裏藏嬌
2021-08-23 09:49

//粗体为修改部分:

#include<iostream.h>
#include<iomanip.h>
class person
{
    int a,b,c;
public:
    person(int x=1,int y=2,int z=3):a(x),b(y),c(z){};
    friend ostream & operator << (ostream &s,person p);
    friend istream & operator >> (istream &s,person &p);
};
ostream & operator <<(ostream &s,person p)
{
    s<<p.a<<endl<<p.b<<endl<<p.c<<endl;
    return s;
}
istream & operator >>(istream &s,person &p)
{
    s>>p.a>>p.b>>p.c;
    return s;
}
int main()
{
    person p;
    cin>>p;
    cout<<p;
    return 0;
}

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