在线等，挺急的！内存到底哪出了错？跪求！

Question

题目描述
我的代码在运行一部分后会意外终止，我知道是内存出现了问题，但到底是哪句话出了错？
这是我们学校的一道练习实验题
相关代码
#ifndefADDRESS_BOOK_H
#defineADDRESS_BOOK_H
#include
usingstd::cin;
usingstd::cout;
usingstd::endl;
usingstd::string;
structaddress
{
stringname;
longlongphone_number;
longlongclassroom;
longlongdormitory;
};
classbook
{
protected:
address*a=NULL;
intlistsize;
intarraylength;
public:
book();
book(constbook&a);//复制构造函数；
~book();
voidinsert(book&a);
void_delete(book&a,stringc);
voidcompile(book&a,stringc);
boolfind(constbook&a,stringc);
voidprint(constbook&a,intn);
};
#endif
book::book()
{
listsize=0;
arraylength=50;
a=newaddress[arraylength];
for(inti=0;i{
a[i].classroom=0;a[i].dormitory=0;a[i].phone_number=0;
}
}
book::book(constbook&c)
{
arraylength=c.arraylength;
listsize=c.listsize;
a=newaddress[arraylength];
for(inti=0;i{
a[i].name=c.a[i].name;
a[i].classroom=c.a[i].classroom;
a[i].dormitory=c.a[i].dormitory;
a[i].phone_number=c.a[i].phone_number;
}
}
voidbook::insert(book&b)
{
if(b.listsize==b.arraylength)
{
delete[]b.a;
b.a=newaddress[2*arraylength];
for(inti=b.arraylength;i<2*b.arraylength;i++)
{
b.a[i].classroom=0;b.a[i].dormitory=0;b.a[i].phone_number=0;
}
b.arraylength=b.arraylength*2;
}
cin>>b.a[listsize].name>>b.a[listsize].phone_number>>b.a[listsize].classroom>>b.a[listsize].dormitory;
listsize++;
}
voidbook::_delete(book&b,stringc)
{
for(inti=0;i{
if(b.a[i].name==c)
{
for(i=i;i{
b.a[i].classroom=b.a[i+1].classroom;
b.a[i].dormitory=b.a[i+1].dormitory;
b.a[i].phone_number=b.a[i+1].phone_number;
b.a[i].name=b.a[i+1].name;
}
a[listsize].classroom=0;a[listsize].dormitory=0;a[listsize].phone_number=0;
break;
}
}
}
voidbook::compile(book&b,stringc)
{
intn;
for(inti=0;i{
if(b.a[i].name==c)
{
cin>>n;
if(n==1)
{
longlongn1;
cin>>n1;
b.a[i].phone_number=n1;
}
elseif(n==2)
{
intn2;
cin>>n2;
b.a[i].classroom=n2;
}
elseif(n==3)
{
intn3;
cin>>n3;
b.a[i].dormitory=n3;
}
}
}
}
boolbook::find(constbook&b,stringc)
{
inti;
for(i=0;i{
if(b.a[i].name==c)
returntrue;
}
returnfalse;
}
voidbook::print(constbook&b,intn)
{
longlongsum=0;
for(inti=0;isum=sum^b.a[i].dormitory;
cout<}
book::~book()
{
for(inti=0;i{
delete[]a;
}
}
intmain()
{
intk=0,nn1;
intnn2;
cin>>nn1;
bookb;stringc;
for(inti=0;i{
cin>>nn2;
if(nn2==0)
b.insert(b);
elseif(nn2==1)
{
cin>>c;
b._delete(b,c);
}
elseif(nn2==2)
{
cin>>c;
b.compile(b,c);
}
elseif(nn2==3)
{
cout<}
elseif(nn2==4)
{
intnnn;cin>>nnn;
b.print(b,nnn);
}
}
return0;
}
麻烦大佬我到底是哪里的错误，谢谢！

Answer 1

析构函数有问题book::~book(){for(inti=0;i