求解啊，这道题修改了好多遍还是不对。。。

#include<iostream>
#include<cstring>
using namespace std;
class people{
private:
int num;
char sex;
char bir[30];
char id[19];
public:
people(int nn,char ns='\0',char nb="1993-1-1",char ni[19]='\0');
void set(int nn,char ns,char nb[30],char ni[19]);
void put();
~people(){}};
people::people(int nn,char ns,char nb[30],char ni[19])
{num=nn;sex=ns;strcpy(bir,nb);strcpy(id,ni);}
void people::set(int nn,char ns,char nb[30],char ni[19])
{num=nn;sex=ns;strcpy(bir,nb);strcpy(id,ni);}
void people::put()
{cout<<"bianhao"<<"xingbie"<<"chushengriqi"<<"shengfengzheng"<<endl;cout<<num<<" "<<sex<<" "<<bir<<" "<<id<<endl;}
int main()
{people p;
p.set(1,'f',"1988-5-20","360121199999999999");
p.put();
return 0;}