c++输入输出流的应用

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#include <iostream>
#include <fstream>
#include <stdlib.h>
using namespace std;
class Copy_file
{
public:
    Copy_file();
    ~Copy_file();
    void Copy_files();
    void in_file();
    void out_file();
protected:
private:
    fstream infl;
    fstream outf;
    char file1[20];
    char file2[20];
};
Copy_file::Copy_file()
{
    cout<<"请输入文件名:";
    cin>>file1;
    infl.open(file1,ios::in|ios::binary);
    if (!infl)
    {
        cout<<"不能打开原文件："<<file1<<endl;
        abort();
    }
    cout<<"请输入目的文件名：";
    cin>>file2;
    outf.open(file2,ios::in|ios::out|ios::binary);
    if (!outf)
    {
        cout<<"不能打开目的文件：";
        abort();
    }
}
Copy_file::~Copy_file()
{
    infl.close();
    outf.close();
}
void Copy_file::Copy_files()
{
    char ch;
    infl.seekg(0);
    infl.get(ch);
    while(!infl.eof())
    {
        if (ch>='a'&&ch<='z')

            outf.put(ch);
            infl.get(ch);

    }

}
void Copy_file::in_file()
{
        char ch;
        infl.close();
        infl.open(file1,ios::in|ios::binary);
        infl.get(ch);
        while(!infl.eof())
        {
            cout<<ch;
            infl.get(ch);
        }
        cout<<endl;
}
void Copy_file::out_file()
{
    char ch;
    outf.seekp(0);
    outf.get(ch);
    while(!outf.eof())
    {
        cout<<ch;
        outf.get(ch);
    }
    cout<<endl;
}
int main()
{
    Copy_file cf;
    cf.Copy_files();
    cout<<"原文件中内容："<<endl;
    cf.in_file();
    cout<<"目的文件中内容："<<endl;
    cf.out_file();
    system("pause");
    return 0;
}
作者：OPK625153475

补充：软件开发 , C++ ,

c++输入输出 流的应用

c++输入输出流的应用