文件操作 将数据写入所需的文件中

#include <iostream>#include<fstream>#include<cstdlib>using namespace std;int main(){    int i=0,m=0,n=100,x=0,y=0,a[10],z;    double sum=0;    ofstream fout("f1.dat",ios::out);    if(!fout){cout<<"open error"<<endl;exit(1);}else{cout<<"open correctly"<<endl;}    cout<<"请输入小组人数：";    cin>>z;    while(i<=z-1)    {        cout<<"请输入第"<<i+1<<"位同学的成绩:";        cin>>a[i];        i++;    }    for(i=0; i<=z-1; i++)    {        sum=sum+a[i];    }    sum=sum/z;    cout<<"平均成绩为:"<<sum<<endl;    fout<<"平均成绩为："<<sum<<endl;    for(i=0; i<=z-1; i++)    {        if(a[i]>m)        {            m=a[i];        }    }    cout<<"最高成绩为："<<m<<" ";     fout<<"最高成绩为："<<m<<" ";    cout<<"学号为:";     fout<<"学号为：";    for(i=0; i<=z-1; i++)    {        if(a[i]==m)        {            x++;            cout<<i+1<<" ";             fout<<i+1<<" ";        }    }    cout<<"最高绩人数为"<<x<<endl;     fout<<"最高成绩人数为："<<x<<endl;    for(i=0; i<=z-1; i++)    {        if(a[i]<n)        {            n=a[i];        }    }    cout<<"最低成绩为："<<n<<" ";     fout<<"最低成绩为："<<n<<" ";     cout<<"学号为:";      fout<<"学号为：";    for(i=0; i<=z-1; i++)    {        if(a[i]==n)        {            y++;           cout<<i+1<<" ";            fout<<i+1<<" ";        }    }    cout<<"最低绩人数为"<<y<<endl;     fout<<"最低成绩人数为："<<y<<endl;    return 0;}