改错题好难，要怎么改

#pragma once
#include<string>
class CStud
{
public:
        int num;
        float score;
        void print() {}
        CStud() {};
            CStud(int n = 0,float s = 0);
};
class Stud
{
public:
        static int num;
        float score;
        Stud() { num = 1; }
        void print() {}
};
#include<string>
#include<iostream>
#include"stud.h"
using namespace std;
void main()
{
CStud * pStud;
cpStud
pStud->num = 0;
pStud->print();

CStud  stArray[10];
stArray->num = 0;

stArray->num = 0;
stArray[0].num = 0;

CStud* pst = new CStud[5];
pst->num = 0;

CStud st[2] = {1,2};
CStud stt[3] = {CStud(1,11),CStud(2,22),CStud(3,33)};
}

这不报错信息都告诉你了，按照报错改不就好了？