US Mail Postage Calculator

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#include<fstream.h>
#include<string.h>
void printerror(int);
enum{infileerr,outfileerr,passworderr};
int main(int argc, char* argv[])

  {
  int fileno=1;
  char infilename[255];
  char outfilename[255];
  char password[255];
  char ch;
  cout<<"\t\t\t -----------------------\n";
  cout<<"\t\t\tXilkCipher v1.3\n";
  cout<<"\t\t\t -----------------------\n\n";
  do				//Start for here

    {
    //--------------------------------------
    //   ----------------------------------------
    //
    //Take care of infile
    ++fileno;
    cout<<" Name of file to encrypt/decrypt: ";
    if (argc<2)

      {
      	cin.getline(infilename,255);
    }
    else

      {
      	strcpy(infilename,argv[fileno-1]);
      	cout<<infilename<<"\n";
    }
    ifstream infile(infilename,ios::binary); //prepare infile.
    if (!infile)

      {
      	printerror(infileerr);
      return -1;
    }
    cout<<"\n Name of destination file: ";
    cin.getline(outfilename,255);
    ofstream outfile(outfilename,ios::binary); //prepare outfile.
    if (!outfile)

      {
      	printerror(outfileerr);
      return -1;
    }
    //--------------------------------------
    //   ----------------------------------------
    //
    //Take care of password
    cout<<"\n Password: ";
    for (int i2=0;i2<255;i2++)password[i2]='§';
    cin.getline(password,255);
    int endofstr;
    char passwordcopy[255];
    for (int i1=0;i1<255;i1++)

      {
      	if(password[i1]=='\0')break;
      	endofstr=i1;
    }
    strcpy(passwordcopy,password);
    for (int i=endofstr;i>=0;i--)

      {
      	password[endofstr-i]=password[endofstr-i]&(~passwordcopy[i]);
    }
    //--------------------------------------
    //   ----------------------------------------
    //
    //Encrpyt infile
    int index=0;
    while((infile.read((char*)&ch,sizeof(ch))))

      {
      if (password[index]=='\0') index=0;
      ch=(password[index])^ch; //xor it
      outfile.write((char*)&ch,sizeof(ch));
      index+=1;
    }
    //--------------------------------------
    //   ----------------------------------------
    //
    //Final messages
    infile.close();
    outfile.close();
    cout<<"\n Encryption/Decryption successful.\n\n\n";
  }																/End for here
  while(fileno<argc);
  while ((ch=cin.get())!=ch){cout<<"";}
  return 0;
}
void printerror(int error)

  {
  char ch;
  switch(error)

    {

      	case infileerr:{
      		 cout<<" Error: File not found\n";
      break;
    }

      case outfileerr:{
      cout<<" Error: Unable to create destination file\n";
      break;
    }

      case passworderr:{
      cout<<" Error: Invalid password\n";
      break;
    }
  }
  while ((ch=cin.get())!=ch){cout<<"";}
}