补充c++程序 请大神指点

Question

#include<iostream>

#include<fstream>

#include<cstring>

using namespace std;

class Record

{

char name[50];

unsigned Id;

char sex;

float score;

public:

~Record(){}

};

int main ()

{

Record m1("Yang Lee",20184445,´M´,90);

Record m2(m1);

cout<<m1<<endl;

m2.setname("Chong Law");

cout<<m2<<endl;

return 0;

}

Answer 1

#include<iostream>

#include<fstream>

#include<cstring>

using namespace std;

class Record

{
	char name[50];

	unsigned Id;

	char sex;

	float score;

public:
	// 重写构造函数
	Record(const char * n, unsigned i, char s, float sc){
		memcpy(name, n, sizeof(name));
		Id = i;
		sex = s;
		score = sc;
	}
	// 设置参数
	void setname(const char * n){
		memcpy(name, n, sizeof(name));
	}
	// 友元函数 流的重载
	friend ostream & operator<<(ostream & os, Record & c)
	{
		os << c.name <<" " << c.Id <<" "<<c. sex <<" "<< c.score;
		return os;
	}
	~Record(){}

};

int main()

{
	Record m1("Yang Lee", 20184445, 'M', 90);

	Record m2(m1);

	cout << m1 << endl;

	m2.setname("Chong Law");

	cout << m2 << endl;

	return 0;

}