C++文件操作问题跪求大神！！！

[u010233287]

#include <iostream>
#include <fstream>
#include <conio.h>
#include <string>
#include <stdio.h>
#include "colorcursor.h"
using namespace std;

void explain()
{
	setcolor(15);
	gotoxy(25,10);
	cout << "欢迎使用文本转换程序，请先将待转";
	gotoxy(21,11);
	cout << "换的文本放在该程序所在目录下!\n";
	setcolor();
}
	

void menu()
{
	setcolor(10);
	gotoxy(24,7);
	cout << "***************菜单***************";
	gotoxy(24,9);
	cout << "             1:  编码             ";
	gotoxy(24,11);
	cout << "             2:  解码             ";
	gotoxy(24,13);
	cout << "             0:  退出             ";
	gotoxy(24,15);
	cout << "**********************************";
	setcolor();
}

void main()
{
	char select;
	string name, ctrl;
	char key[] = "liujian619";
	unsigned char ch;
	int i = 1;
	ifstream infile;
	ofstream outfile;
	
	explain();
	gotoxy(32,14);
	cout << "按任意键继续...";
	getch();
	system("cls");
	
	menu();
	setcolor(15);
	gotoxy(24,17);
	cout << "输入你的选择:[ ]";
	gotoxy(38,17);
	select = getche();
	while('0' != select && '1' != select && '2' != select)
	{
		setcolor(12);
		gotoxy(20,19);
		cout << "\a!!!错误: 输入不合法，请重新输入";
		setcolor();
		gotoxy(38,17);
		select = getche();
	}
	system("cls");
	if('0' == select)
	{
		return;
	}

	cout << "待转换文件的文件名:";
	cin >> name;
	
	if('2' == select)
	{
		cout << "输入解码密钥:";
		int x = wherex();
	    int y = wherey();
		setcolor(12);
		cout << "\n【注意：解码密钥须与编码密钥相同，否则得不到原内容!!!】";
		setcolor(15);
		gotoxy(x,y);
		cin >> key;
		cout << "\n\n";
	}
	
	infile.open(name.c_str());
	if(!infile)
	{
		cout<<"无法打开！\n";
		exit(0);
	}
	outfile.open("文本转换.txt");
	if(!outfile)
	{
		cout<<"无法打开！\n";
		exit(0);
	}
	outfile << flush;

	while(infile >> noskipws >> ch)
	{
		if('1' == select)
		{
			ch = ~(ch ^ key[(i%10)-1]);
		}
		if('2' == select)
		{
			ch = (~ch) ^ key[(i%10)-1];
		}
		outfile << ch;
		i++;
	}
	
	infile.close();
	outfile.close();

	cout << "转换成功!!!\n";
	

	remove(name.c_str());  //删除文件
	rename("文本转换.txt",name.c_str());  //重命名文件
	ctrl = "start " + name;  
	system(ctrl.c_str());
	system("pause");
}
	

接下来几张图片传了半天没传上来，只好给个链接了，希望各位见谅！
http://tieba.baidu.com/p/2634955305