C语言程序,一定要在VC6.0下能运行的,学生成绩管理系统,要求有写入文件,和文件读取内容功能.

#include<string.h>
#include<conio.h>
#include<iomanip.h>
#include<iostream.h>
#define N 10
class std
{
int No;
char name[10];
float Eng;
float Chi;
float Mat;
float total;
public:
void setname(char na[]){strcpy(name,na);};
void setNo(int n){No=n;};
void setEng(float e){Eng=e;};
void setChi(float c){Chi=c;};
void setMat(float m){Mat=m;};
void settotal(float t){total=t;};
char* getname(){return name;};
int getNo(){return No;};
float getEng(){return Eng;};
float getChi(){return Chi;};
float getMat(){return Mat;};
float gettotal(){ return total;};
};

class compute
{
int ns;
std na[N];
static float sumEng;
static float sumChi;
static float sumMat;
public:
void getdata();
void sort();
void disp();
float aveEng()
{
return su