8.4发现忘记发上来了，现在补上。

8.4

#include
    
     #include 
     
      //出问题时，使用的是cstring,但换成string一样出问题using namespace std;struct stringy{	char *str;	int ct;};void set(stringy &beany,const char t[]);void show(const stringy &beany,int count=0);void show(const char t[],int count=0);void main84(){	stringy beany;	char testing[]="Reality isn't what it used to be.";	//char testing[]="Reality";//what it used to be.";	set(beany,testing);	show(beany);	show(beany,2);	testing[0]='D';	testing[1]='u';	show(testing);	show(testing,3);	show("Done!");	cout<
      
       <