#include "crypto.h"#include <QTextStream>QTextStream cout(stdout, QIODevice::WriteOnly);int main()  {     QString str1 ("This is a sample string"), str2;     cout << "Original string: " << str1 << endl;     QString seqstr("pspsps");     ushort key(13579);     Crypto crypt(key, seqstr);     str2 = crypt.encrypt(str1);     cout << "Encrypted string: " << str2 << endl;     cout << "Recovered string: " << crypt.decrypt(str2) << endl; }