程序代码：

#include <iostream>
#include <fstream>
#include <cstring>
using namespace std;

/* run this program using the console pauser or add your own getch, system("pause") or input loop */

int main()
{
    ifstream infile;
    ofstream outfile;
    char name[20];
    char c;
    cout<<"please entra filename"<<endl;
    cin>>name;
    infile.open(name);
    if(!infile)
    {
        cout<<"failure"<<endl;
        exit(1);
    }
    cout<<"start copy"<<endl;
    stract(name,"copyfile");
    outfile.open(name);
    if(!outfile)
    {
        cout<<"can not copy"<<endl;
        exit(1);
    }
    while(!outfile.eof())
    {
        infile.get(c);
        cout<<c;
        }
    cout<<endl;
    infile.close();
    outfile.close();       

    return 0;
}

[此贴子已经被作者于2016-8-12 16:50编辑过]