求 解c++为什么我这程序会崩溃

#include<iostream.h>
#include<string.h>
class Person
{
char *name;
int age;
public:
Person(){}
Person(char *n,int a){
name=new char[strlen(n)+1];
strcpy(name,n);
age=a;
}
~Person()
{
delete name;
}
void print()
{cout<<name<<'\t'<<age<<endl;}
};
void main()
{
Person a("张小松",21),b=a,c;
c=b;
c.print();
}