c++问题----编译出错

#include <iostream.h>
struct info
{
char name[20];
char sex[8];
int age;
int nomber;
};

class school
{
public:
void apply();
void ReWr();
school(int i){
n=i;
}
~school(){
delete [] room;
}
private:
struct info *room;
int n;
};

void main()
{
int n;
cout<<"Please input your class humen nomber:"<<endl;
cin>>n;
school one(n);
one.apply();
cout<<"Please input student's info"<<endl;
one.ReWr();
}

void school::apply()
{
struct inof *roomX=new struct info[n];
room=roomX;
}

void school::ReWr()
{
int i;
for(i=0;i<n;i++)
{
cout<<"Please input student's nomber:"<<endl;
cin>>room[i].nomber;
cout<<"Please input studen

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