请问大牛为什么我在E盘找不到test，txt文件，，我明明在程序中创建了

#include<iostream>
#include<fstream>
using namespace std;
int main()
{
    ofstream fcout("E:test.txt");
    if(!fcout)
        cout<<"文件创建失败\n";
    fcout<<"ABCDFEHGKLMNOPQYSTUVWXYZ1234567890";
    fcout.close();
    char ch[]="123456789abcdefgh";
    fstream ffcout;
    ffcout.open("E:test.txt");
    if(ffcout.fail())
        cout<<"打开文件失败\n";
    ffcout.seekp(9,ios::beg);
    ffcout<<ch;
    ffcout.close();
    ifstream fcin("E:test.txt");
    if(fcin.fail())
        cout<<"文件打开失败\n";
    char temp;
    while(fcin.get(temp))
    {
        cout<<temp;
    }
    fcin.close();
    return 0;
}