【请教】这几个语句什么意思

灬☆爱你

#include<iostream>
#include<fstream>
int main()
{
using namespace std;
char automobile[50];
int year;
double a_price;
double d_price;
ofstream outFile;
outFile.open("carinfo.txt");
cout<<"enter*********automobile:";
cin.getline(automobile,50);
cout<<"enter******year:";
cin>>year;
cout<<"enter****price:";
cin>>a_price;
d_price=0.913*a_price;
outFile<<fixed;
outFile.precision(2);
outFile.setf(ios_base::showpoint);//这里没有定义fixed啊 ，还有就是下面的两个语句什么作用，
outFile<<"make and model:"<<automobile<<endl;
outFile<<"year:"<<year<<endl;
outFile<<"was asking $:"<<a_price<<endl;
outFile<<"now asking$:"<<d_price<<endl;
return 0;
}//他也生成了文本怎么从make and model开始就只生成在所创建的carinfo.txt，而不在屏幕上显示啊

√龙

是不是我的问题提的太幼稚了，怎么 没人回答啊 ，还是我问得不对的啊