C++派生字符串并和基类字符串连接为一个字符串

 #include <iostream.h>
#include <string.h>

class Str
{
public:
 Str(char *p)
 {
  strI=p;
 }
 
 print()
 {
  cout<<strI<<endl;
 }
public:
 char *strI;
};

class StrOne:public Str
{
public:
 StrOne(char *p1,char *p2):Str(p1)
 {
  str2=p2;
 }

 print()
 {
  strcpy(StrOut,strI);
  strcat(StrOut,str2);
  cout<<"/n连接后的字符串为:"<<StrOut<<endl;
 }
private:
 char StrOut[80];
 char *str2;
};

void main()
{
 char p1[20],p2[20];
 cout<<"请输入第一个字符串:";
 cin>>p1;
 cout<<"/n请输入第二个字符串:";
 cin>>p2;
 StrOne B(p1,p2);
 B.print();
}