一个非常简单的加解密程序）

#include <cstdio>
#include <iostream>
#include <fstream>
#include <string>
#include <cstring>

using namespace std;

const int maxn = 1e5 + 10;

char str[maxn];

int main()
{
    string filename;
    cout << "input file's name:\n";
    cin >> filename;
    ifstream fin(filename, ios::binary);
    if (!fin)
    {
        cout << "Error\n";
        return 0;
    }
    cout << "output file's name\n";
    cin >> filename;
    ofstream fout(filename, ios::binary);
    if (!fout)
    {
        cout << "Error\n";
        return 0;
    }
    cout << "encode/decode key:\n";
    int key;
    cin >> key;
    while (fin)
    {
        fin.read(str, maxn - 10);
        int n = fin.gcount();
        for (int i = 0; i < n; ++i)
        {
            str[i] = (~str[i]) ^ key;
        }
        fout.write(str, n);
    }
    cout << "succeed\n";
}

标签：非常简单,cout,int,加解密,程序,filename,str,include,fin
来源： https://www.cnblogs.com/eafoo/p/16270993.html